Aquarium Gravel Substrates

Pure Water Pebbles Freshwater Aquarium Substrate contains all natural gravel with a fish-safe 100% acrylic coating. These attractive pebbles are non-toxic, colorfast, and will not alter the chemistry of your aquarium water.

• Gravel Grain Size 3.1 - 6.3 mm
• Premium freshwater aquarium substrate
• Natural gravel with 100% acrylic coating
• Non-toxic, colorfast, will not alter water chemistry

Pure Water Pebbles are recommended for aquariums, ponds, terrariums, gardens, potted plants, vases, ash trays, crafts and hobbies, architectural surfaces, landscaping designs, and more! Be sure to check out all of the colors available to find the perfect gravel for your needs.

Pure Water Pebbles Freshwater Aquarium Substrate contains all natural gravel with a fish-safe 100% acrylic coating. These attractive pebbles are non-toxic, colorfast, and will not alter the chemistry of your aquarium water.

• Gravel Grain Size 3.1 - 6.3 mm
• Premium freshwater aquarium substrate
• Natural gravel with 100% acrylic coating
• Non-toxic, colorfast, will not alter water chemistry

Pure Water Pebbles are recommended for aquariums, ponds, terrariums, gardens, potted plants, vases, ash trays, crafts and hobbies, architectural surfaces, landscaping designs, and more! Be sure to check out all of the colors available to find the perfect gravel for your needs.

Pure Water Pebbles Freshwater Aquarium Substrate contains all natural gravel with a fish-safe 100% acrylic coating. These attractive pebbles are non-toxic, colorfast, and will not alter the chemistry of your aquarium water.

• Gravel Grain Size 3.1 - 6.3 mm
• Premium freshwater aquarium substrate
• Natural gravel with 100% acrylic coating
• Non-toxic, colorfast, will not alter water chemistry

Pure Water Pebbles are recommended for aquariums, ponds, terrariums, gardens, potted plants, vases, ash trays, crafts and hobbies, architectural surfaces, landscaping designs, and more! Be sure to check out all of the colors available to find the perfect gravel for your needs.

Pure Water Pebbles Freshwater Aquarium Substrate contains all natural gravel with a fish-safe 100% acrylic coating. These attractive pebbles are non-toxic, colorfast, and will not alter the chemistry of your aquarium water.

• Gravel Grain Size 3.1 - 6.3 mm
• Premium freshwater aquarium substrate
• Natural gravel with 100% acrylic coating
• Non-toxic, colorfast, will not alter water chemistry

Pure Water Pebbles are recommended for aquariums, ponds, terrariums, gardens, potted plants, vases, ash trays, crafts and hobbies, architectural surfaces, landscaping designs, and more! Be sure to check out all of the colors available to find the perfect gravel for your needs.

Pure Water Pebbles Freshwater Aquarium Gravel contains all natural gravel with a fish-safe 100% acrylic coating. These attractive pebbles are safe, colorfast, and will not alter the conditions of your aquarium water.

• Gravel Grain Size 3.1 - 6.3 mm
• Premium freshwater aquarium fill
• Natural gravel with 100% acrylic coating
• Safe, colorfast, will not alter water conditions

Pure Water Pebbles are recommended for aquariums, ponds, terrariums, gardens, potted plants, vases, ash trays, crafts and hobbies, architectural surfaces, landscaping designs, and more! Be sure to check out all of the colors available to find the perfect gravel for your needs.

Pure Water Pebbles Freshwater Aquarium Substrate contains all natural gravel with a fish-safe 100% acrylic coating. These attractive pebbles are non-toxic, colorfast, and will not alter the chemistry of your aquarium water.

• Gravel Grain Size 3.1 - 6.3 mm
• Premium freshwater aquarium substrate
• Natural gravel with 100% acrylic coating
• Non-toxic, colorfast, will not alter water chemistry

Pure Water Pebbles are recommended for aquariums, ponds, terrariums, gardens, potted plants, vases, ash trays, crafts and hobbies, architectural surfaces, landscaping designs, and more! Be sure to check out all of the colors available to find the perfect gravel for your needs.

Pure Water Pebbles Freshwater Aquarium Substrate contains all natural gravel with a fish-safe 100% acrylic coating. These attractive pebbles are non-toxic, colorfast, and will not alter the chemistry of your aquarium water.

• Gravel Grain Size 8.7 - 9.5 mm
• Premium freshwater aquarium substrate
• Natural gravel with 100% acrylic coating
• Non-toxic, colorfast, will not alter water chemistry

Pure Water Pebbles are recommended for aquariums, ponds, terrariums, gardens, potted plants, vases, ash trays, crafts and hobbies, architectural surfaces, landscaping designs, and more! Be sure to check out all of the colors available to find the perfect gravel for your needs.

Pure Water Pebbles Freshwater Aquarium Substrate contains all natural gravel with a fish-safe 100% acrylic coating. These attractive pebbles are non-toxic, colorfast, and will not alter the chemistry of your aquarium water.

• Gravel Grain Size 3.1 - 6.3 mm
• Premium freshwater aquarium substrate
• Natural gravel with 100% acrylic coating
• Non-toxic, colorfast, will not alter water chemistry

Pure Water Pebbles are recommended for aquariums, ponds, terrariums, gardens, potted plants, vases, ash trays, crafts and hobbies, architectural surfaces, landscaping designs, and more! Be sure to check out all of the colors available to find the perfect gravel for your needs.

Pure Water Pebbles Freshwater Aquarium Substrate contains all natural gravel with a fish-safe 100% acrylic coating. These attractive pebbles are non-toxic, colorfast, and will not alter the chemistry of your aquarium water.

• Gravel Grain Size 3.1 - 6.3 mm
• Premium freshwater aquarium substrate
• Natural gravel with 100% acrylic coating
• Non-toxic, colorfast, will not alter water chemistry

Pure Water Pebbles are recommended for aquariums, ponds, terrariums, gardens, potted plants, vases, ash trays, crafts and hobbies, architectural surfaces, landscaping designs, and more! Be sure to check out all of the colors available to find the perfect gravel for your needs.

Pure Water Pebbles Freshwater Aquarium Substrate contains all natural gravel with a fish-safe 100% acrylic coating. These attractive pebbles are non-toxic, colorfast, and will not alter the chemistry of your aquarium water.

• Gravel Grain Size 3.1 - 6.3 mm
• Premium freshwater aquarium substrate
• Natural gravel with 100% acrylic coating
• Non-toxic, colorfast and will not alter water chemistry

Pure Water Pebbles are recommended for aquariums, ponds, terrariums, gardens, potted plants, vases, ash trays, crafts and hobbies, architectural surfaces, landscaping designs, and more! Be sure to check out all of the colors available to find the perfect gravel for your needs.

Pure Water Pebbles Freshwater Aquarium Substrate contains all natural gravel with a fish-safe 100% acrylic coating. These attractive pebbles are non-toxic, colorfast, and will not alter the chemistry of your aquarium water.

• Gravel Grain Size 6.3 - 9.5 mm
• Premium freshwater aquarium substrate
• Natural gravel with 100% acrylic coating
• Non-toxic, colorfast, will not alter water chemistry

Pure Water Pebbles are recommended for aquariums, ponds, terrariums, gardens, potted plants, vases, ash trays, crafts and hobbies, architectural surfaces, landscaping designs, and more! Be sure to check out all of the colors available to find the perfect gravel for your needs.

Pure Water Pebbles Freshwater Aquarium Substrate contains all natural gravel with a fish-safe 100% acrylic coating. These attractive pebbles are non-toxic, colorfast, and will not alter the chemistry of your aquarium water.

• Gravel Grain Size 3.1 - 6.3 mm
• Premium freshwater aquarium substrate
• Natural gravel with 100% acrylic coating
• Non-toxic, colorfast, will not alter water chemistry

Pure Water Pebbles are recommended for aquariums, ponds, terrariums, gardens, potted plants, vases, ash trays, crafts and hobbies, architectural surfaces, landscaping designs, and more! Be sure to check out all of the colors available to find the perfect gravel for your needs.

Pure Water Pebbles Freshwater Aquarium Substrate contains all natural gravel with a fish-safe 100% acrylic coating. These attractive pebbles are non-toxic, colorfast, and will not alter the chemistry of your aquarium water.

• Gravel Grain Size 8.7 - 9.5 mm
• Premium freshwater aquarium substrate
• Natural gravel with 100% acrylic coating
• Non-toxic, colorfast, will not alter water chemistry

Pure Water Pebbles are recommended for aquariums, ponds, terrariums, gardens, potted plants, vases, ash trays, crafts and hobbies, architectural surfaces, landscaping designs, and more! Be sure to check out all of the colors available to find the perfect gravel for your needs.

Pure Water Pebbles Freshwater Aquarium Substrate contains all natural gravel with a fish-safe 100% acrylic coating. These attractive pebbles are non-toxic, colorfast, and will not alter the chemistry of your aquarium water.

• Gravel Grain Size 6.3 - 9.5 mm
• Premium freshwater aquarium substrate
• Natural gravel with 100% acrylic coating
• Non-toxic, colorfast, will not alter water chemistry

Pure Water Pebbles are recommended for aquariums, ponds, terrariums, gardens, potted plants, vases, ash trays, crafts and hobbies, architectural surfaces, landscaping designs, and more! Be sure to check out all of the colors available to find the perfect gravel for your needs.

CaribSea Aragonite Special Grade Reef Sand is an ideal, natural substrate for marine, reef, and cichlid aquariums. This pristine ocean sand helps create a natural biological and mineral balance while promoting the overall health of fish and invertebrates.

• Perfect for marine, reef, and cichlid aquariums
• Helps create a natural biological and mineral balance
• Promotes healthy fish and invertebrates

Aragonite Reef Sand reduces fish stress by recreating a natural reef environment in the tank. It is precision-graded for efficient calcium carbonate buffering and high in strontium, magnesium, and other essential reef elements, and always silica-free. It is harvested from pristine ocean waters - not collected from beaches or reefs - and contains no harmful tar, organics or impurities.

Its buffering capabilities are unmatched, helping to maintain a proper pH of 8.2 without the constant addition of chemicals to the tank. Each pound of Aragonite provides up to 10,000 square inches of surface area for maximum growth of beneficial, water-purifying bacteria. These bacteria help control nitrate, nitrite, ammonia, and other harmful waste products to keep your fish healthy and your tank clean. CaribSea Aragonite Reef Sand has an ideal grain size for reef tanks, fish tanks, plenum systems, Berlin systems, refugiums, and more.

Directions: Rinse well with clean water. Do not use soap or detergent. 1 to 2 pounds of sand per gallon of water is usually sufficient for most displays. More exact measurements can be obtained from the manufacturer's website. For best results, follow all directions on packaging. When using Aragonite for African cichlids or other freshwater applications, a slight cloudiness may persist until the aquarium cycles due to high rates of calcium carbonate dissolution.

Composition:
Magnesium - 1,050 ppm
Calcium - 381,000 ppm
Strontium - 7,390 ppm

Grain Size: 1.0-2.0 mm

Pure Water Pebbles Freshwater Aquarium Substrate contains all natural gravel with a fish-safe 100% acrylic coating. These attractive pebbles are non-toxic, colorfast, and will not alter the chemistry of your aquarium water.

• Gravel Grain Size 3.1 - 6.3 mm
• Premium freshwater aquarium substrate
• Natural gravel with 100% acrylic coating
• Non-toxic, colorfast, will not alter water chemistry

Pure Water Pebbles are recommended for aquariums, ponds, terrariums, gardens, potted plants, vases, ash trays, crafts and hobbies, architectural surfaces, landscaping designs, and more! Be sure to check out all of the colors available to find the perfect gravel for your needs.

CaribSea Eco-Complete Planted Aquarium Substrate is mineralogically and biologically complete substrate for planted aquariums that comes in live water that contains purifying bacteria.

• Mineralogically and biologically complete substrate
• For planted aquariums
• Comes in live water that contains purifying bacteria

Mineralogically complete means it contains iron, calcium, magnesium, potassium, sulfur plus over 25 other elements to nourish your aquatic plants. It contains all the mineral nutrients needed for luxuriant aquatic plant growth without nuisance algae. This iron-rich substrate eliminates the need for laterite.

Biologically complete means it contains live heterotrophic bacteria to rapidly convert fish waste into natural food for your aquatic plants; creates a natural biological balance which makes cycling a new aquarium faster and safer; packed in Liquid Amazon buffered "Black Water" solution for immediate organic water conditioning; unsurpassed MacroPorosity for healthy roots and bacterial efficiency. You would need to buy 4 bags of ordinary gravel to equal the surface area of this one bag of substrate.

Other features include: nitrate and carbonate free-will not increase pH or carbonate hardness; there are no artificial dyes, paints or chemical coatings; the natural black substrate encourages the most vibrant coloration in fishes and reduces fish stress; spherial grains for optimum diffusion performance; supplies calcium without raising the pH; lead free.

The Bi-Modal grading naturally separates into 2 distinct layers: 1) Fine layer on the bottom for best root development and 2) Coarse layer on top which conveys oxygen and nutrients to the roots.

Instructions: Use 1-2 pounds per gallon of aquarium water. Two pounds or more per gallon will deliver best performance. An ideal depth is at least 3".

It is designed to be a complete substate but may also serve as a bottom layer with your choice of non-carbonate substrate on top (do not use marble, dolomite, limestone, crushed coral, shells aragonite etc.).

For new aquarium set-ups simply pour in the entire contents of this bag and fill aquarium with de-chlorintated tap water or, for best results, de-ionized or distilled water. It will automatically segregate into 2 distinct layers with the finer material on the bottom.

For established systems, drain and discard most of the liquid contents of the product before placing into the system.

Warning!!! Placing new gravel over the top ("capping") of an estabished gravel bed can be damaging to aquatic life. Gently mix new material into the existing bed with fingers. For added safety this process can be done, in sections, over the course of a few days.

Place aquatic plants with roots deep into the substrate. Plants may be held in place with the aid of small rocks, pieces of wood, etc.

Pure Water Pebbles Freshwater Aquarium Substrate contains all natural gravel with a fish-safe 100% acrylic coating. These attractive pebbles are non-toxic, colorfast, and will not alter the chemistry of your aquarium water.

• Premium freshwater aquarium substrate
• Gravel Grain Size 8.7 - 9.5 mm
• Natural gravel with 100% acrylic coating
• Non-toxic, colorfast, will not alter water chemistry

Pure Water Pebbles are recommended for aquariums, ponds, terrariums, gardens, potted plants, vases, ash trays, crafts and hobbies, architectural surfaces, landscaping designs, and more! Be sure to check out all of the colors available to find the perfect gravel for your needs.

CaribSea Eco Complete Freshwater African Cichlid Sand is a minereralogically complete aragonite substrate. This special sand maintains the high pH African Cichlids need without the constant addition of chemicals and provides an automatic buffer for the life of the aquarium.

• Maintains the high pH African Cichlids need
• Buffers automatically for the life of the aquarium
• Adds calcium, magnesium, carbonate and more

The sand's dark color encourages the richest coloration in fishes. Its unique composition re-creates the African Rift Lake environment. High internal porosity facilitates maximum biological capacity to keep more fish healthier for longer!

Pure Water Pebbles Freshwater Aquarium Substrate contains all natural gravel with a fish-safe 100% acrylic coating. These attractive pebbles are non-toxic, colorfast, and will not alter the chemistry of your aquarium water.

• Gravel Grain Size 6.3 - 9.5 mm
• Premium freshwater aquarium substrate
• Natural gravel with 100% acrylic coating
• Non-toxic, colorfast, will not alter water chemistry

Pure Water Pebbles are recommended for aquariums, ponds, terrariums, gardens, potted plants, vases, ash trays, crafts and hobbies, architectural surfaces, landscaping designs, and more! Be sure to check out all of the colors available to find the perfect gravel for your needs.

Pure Water Pebbles Freshwater Aquarium Substrate contains all natural gravel with a fish-safe 100% acrylic coating. These attractive pebbles are non-toxic, colorfast, and will not alter the chemistry of your aquarium water.

• Gravel Grain Size 3.1 - 6.3 mm
• Premium freshwater aquarium substrate
• Natural gravel with 100% acrylic coating
• Non-toxic, colorfast, will not alter water chemistry

Pure Water Pebbles are recommended for aquariums, ponds, terrariums, gardens, potted plants, vases, ash trays, crafts and hobbies, architectural surfaces, landscaping designs, and more! Be sure to check out all of the colors available to find the perfect gravel for your needs.

Nature's Ocean Live Reef Sand is premium, 100% natural, bio-active aragonite sand for marine aquariums. Made from real ocean sand, packaged in its natural state, it comes ready for instant use: just add saltwater and fish for instant cycling and a thriving tank.

• 100% natural live ocean sand, packaged in its natural state
• Instant cycling for immediate nitrogenous waste removal and organic balance
• Contains natural live marine bacteria to quickly stabilize your tank

This all natural marine sand contains live beneficial bacteria biofilm - the same cultures that naturally maintain healthy balance in the ocean! It activates immediately upon immersion in saltwater, instantly beginning to remove ammonia, nitrite, and nitrate to establish biological balance. Since these bacteria are straight from the ocean, they are more effective than cultured live sand products that artificially replicate marine conditions. This original patented formula is ideal for most applications*.

In addition to beneficial bacteria, this substrate also provides essential trace elements for healthy coral growth, including zinc sulfate, calcium chloride, manganese chloride, cobalt chloride, copper sulfate, sodium molybdenum, strontium chloride, nickel chloride, potassium bromide, and sodium silicate.

Recommended Use: Use a minimum of 1lb Bio-Activ Live Argaonite Live Sand per gallon of saltwater. Set up an appropriate filtering system and allow it to circulate. During the first month introduce no more than 1" of fish per 5 gallon saltwater. Nature's Ocean recommends using Nutri-SeaWater Natural Live Ocean Saltwater to instantly establish an ideal marine environment.

*Note: Not recommended for undergravel filters.

Nature's Ocean Live Reef Sand is premium, 100% natural, bio-active aragonite sand for marine aquariums. Made from real ocean sand, packaged in its natural state, it comes ready for instant use: just add saltwater and fish for instant cycling and a thriving tank.

• 100% natural live ocean sand, packaged in its natural state
• Instant cycling for immediate nitrogenous waste removal and organic balance
• Contains natural live marine bacteria to quickly stabilize your tank

This all natural marine sand contains live beneficial bacteria biofilm - the same cultures that naturally maintain healthy balance in the ocean! It activates immediately upon immersion in saltwater, instantly beginning to remove ammonia, nitrite, and nitrate to establish biological balance. Since these bacteria are straight from the ocean, they are more effective than cultured live sand products that artificially replicate marine conditions. This original patented formula is ideal for most applications*.

In addition to beneficial bacteria, this substrate also provides essential trace elements for healthy coral growth, including zinc sulfate, calcium chloride, manganese chloride, cobalt chloride, copper sulfate, sodium molybdenum, strontium chloride, nickel chloride, potassium bromide, and sodium silicate.

Recommended Use: Use a minimum of 1lb Bio-Activ Live Argaonite Live Sand per gallon of saltwater. Set up an appropriate filtering system and allow it to circulate. During the first month introduce no more than 1" of fish per 5 gallon saltwater. Nature's Ocean recommends using Nutri-SeaWater Natural Live Ocean Saltwater to instantly establish an ideal marine environment.

*Note: Not recommended for undergravel filters.

What type of system would I use Fiji Pink in? Fiji Pink is a great deep sand bed system substrate that has a unique look with pink flecks throughout. Ideal Live Reef Sand For: Berlin Systems, Plenum Systems, Nitrate Reduction Beds, Fish Tanks, Reef Tanks and Sumps and Refugiums.

• Fiji Pink Sand is Live and Reef Ready Today
• Millions of Water Purifying Bacteria per Pound proven to Reduce Nitrates
• Fiji Pink Reef Sand substrate size 0.5 - 1.5mm

General Use: For best results, use at least 1 pound of AragAlive! per gallon of seawater. For deep sand beds use 2 pounds per gallon. Do not rinse. AragAlive! may also be used to seed CaribSea’s dry aragonite products. AragAlive! compresses new tank cycle time and suppresses initial ammonia spike. Live rocks and most invertebrates may be placed in aquarium immediately. However, gradually introduce fish within the first 3 weeks, and do not exceed one inch of fish per gallons of water during this time.

Berlin Systems: The most suitable substrates are AragAlive! Fiji Pink. Use 1 pound per gallon. Place live rock on top covering the least amount of sand as possible. Use small reef friendly hermit crabs, shrimp, serpent stars, sea cucumbers, and other benthic animals to avoid detritus accumulations.

For Deep Nitrate Reduction Beds in Display Aquariums use AragAlive! Fiji Pink Add substrate to a depth of 3 to 5 inches (2 to 3 pounds per gallon). Place base or live rock so as to cover the least amount of the substrate as possible. It is especially desirable to incorporate burrowing and sand sifting fish and invertebrates for optimum health of these systems.

Warning! Placing new substrates over the top of an established substrate bed can be damaging to aquatic life. Gently mix new material into the existing bed with fingers. For added safety, this process can be done in sections, over the course of a few days.