Substrates

Items 1 to 48 of 140 total

Adding the right substrate can do wonders for your aquarium. Not only will it enhance the appearance of your aquarium, but it will also make sure that your fish get the ideal filtration and water chemistry for their needs. To make sure every fish keeper is able to provide the best for their pets, Big Al’s Pets offers a huge selection of over 100 aquarium substrates. From sand to gravel to other textures and sizes, there’s something for everyone in this collection. Plus, the large variety of products ensures that your fish have a healthy environment while you also get your choice of price point, brand, and desired aesthetic.

When you browse our selection of products, you’ll soon see that each substrate offers its own unique benefits, like added minerals and nutrients, pH maintenance, or clarifying abilities. Plus, you’ll be able to find the perfect color to decorate your aquarium thanks to the huge variety of options.
  • Fluval Stratum - 17.6 lb
    • Volcanic soil from the foothills of Mount Aso Volcano
    • Ideal substrate for growth of freshwater aquatic plants
    • Packed with readily available minerals and nutrients
    • Supports nitrifying bacteria to help maintain water quality
    • Perfect for shrimp - protects newborns from predation!

    Regular Price: USD 32.99

    Special Price USD 26.99

    Regular Price: USD 32.99

    Special Price USD 26.99

  • Estes Nature Blends Gravel - Deep River - 25 lb
    • Marine and Reef Safe!
    • No rinsing required
    • Hides unsightly fish waste, and anchors down plants and Decor

    Regular Price: USD 15.99

    Special Price USD 13.99

    Regular Price: USD 15.99

    Special Price USD 13.99

  • Estes Aqua Sand - Black - 5 lb
    All Estes products are clear coated, using 100% environmentally- friendly high gloss resin. This state of the art process makes their gravel virtually dust free, and provides the best possible appearance and ease of use in your aquarium.

    Regular Price: USD 2.99

    Special Price USD 2.49

    Regular Price: USD 2.99

    Special Price USD 2.49

  • Fluval Stratum - 4.4 lb
    • Volcanic soil from the foothills of Mount Aso Volcano
    • Ideal substrate for growth of freshwater aquatic plants
    • Packed with readily available minerals and nutrients
    • Supports nitrifying bacteria to help maintain water quality
    • Perfect for shrimp - protects newborns from predation!

    Regular Price: USD 9.99

    Special Price USD 8.49

    Regular Price: USD 9.99

    Special Price USD 8.49

  • Carib Sea Eco-Complete Cichlid Sand - 20 lb
    Eco-Complete Cichlid substrate is complete with minerals and contains aragonite! Maintains the high pH that African Cichlids need while helping to resist pH drops. It buffers for the life of the aquarium and adds calcium, magnesium, carbonate, and more!
    USD 22.39
    USD 22.39
  • Carib Sea Ocean Direct Caribbean Live Sand - 40 lb
    Each bag includes a packet of Bio-Magnet clarifier to reposition free-floating bacteria to where they are most active; sand beds, live rock surfaces, and to biological filtration media. Ocean Direct provides a thriving, natural aquarium in minutes!
    USD 28.95
    USD 28.95
  • Estes Aqua Sand - White - 5 lb
    All Estes products are clear coated, using 100% environmentally- friendly high gloss resin. This state of the art process makes their gravel virtually dust free, and provides the best possible appearance and ease of use in your aquarium.

    Regular Price: USD 2.99

    Special Price USD 2.49

    Regular Price: USD 2.99

    Special Price USD 2.49

  • Carib Sea Super Naturals Blue Ridge - 20 lb
    • Sizes and colors were selected to re-create natural jungle environments
    • Suitable for freshwater and marine aquariums with proper maintenance
    • Pre-washed, pH neutral & allows the beneficial bacteria to build colonies
    • Prevents reflections from the base of the aquarium from aggravating fish
    USD 10.40
    USD 10.40
  • Carib Sea Super Naturals Tahitian Moon - 50 lb
    • Sizes and colors were selected to re-create natural jungle environments
    • Suitable for freshwater and marine aquariums with proper maintenance
    • Pre-washed, pH neutral & allows the beneficial bacteria to build colonies
    • Prevents reflections from the base of the aquarium from aggravating fish
    USD 43.58
    USD 43.58
  • Carib Sea African Cichlid Mix Sahara Sand - 20 lb
    CaribSea's cichlid gravels naturally buffer your aquarium water with aragonite, simplifying the process or replicatiing the water parameters of the great African rift lakes, and eliminating downward drift in pH in established tanks.
    USD 15.33
    USD 15.33
  • Carib Sea Eco-Complete Cichlid White Sand - 20 lb
    Eco-Complete Cichlid substrate is complete with minerals and contains aragonite! Maintains the high pH that African Cichlids need while helping to resist pH drops. It buffers for the life of the aquarium and adds calcium, magnesium, carbonate, and more!
    USD 22.39
    USD 22.39
  • Carib Sea Seaflor Special Grade Reef Sand - 40 lb
    CaribSea aragonite is purposely engineered and free of impurities such as ash, metals, pesticides, and silica which allows you to create a safe and beautiful environment for your fish and invertebrates.
    USD 41.42
    USD 41.42
  • Fluval Stratum - 8.8 lb
    • Volcanic soil from the foothills of Mount Aso Volcano
    • Ideal substrate for growth of freshwater aquatic plants
    • Packed with readily available minerals and nutrients
    • Supports nitrifying bacteria to help maintain water quality
    • Perfect for shrimp - protects newborns from predation!

    Regular Price: USD 18.99

    Special Price USD 15.99

    Regular Price: USD 18.99

    Special Price USD 15.99

  • Carib Sea African Cichlid Mix Rift Lake Authentic - 50 lb
    CaribSea's cichlid gravels naturally buffer your aquarium water with aragonite, simplifying the process or replicatiing the water parameters of the great African rift lakes, and eliminating downward drift in pH in established tanks.
    USD 35.21
    USD 35.21
  • Carib Sea Eco-Complete Cichlid Zack Black - 20 lb
    Eco-Complete Cichlid substrate is complete with minerals and contains aragonite! Maintains the high pH that African Cichlids need while helping to resist pH drops. It buffers for the life of the aquarium and adds calcium, magnesium, carbonate, and more!
    USD 22.39
    USD 22.39
  • Carib Sea African Cichlid Mix - 20 lb
    CaribSea's cichlid gravels naturally buffer your aquarium water with aragonite, simplifying the process or replicatiing the water parameters of the great African rift lakes, and eliminating downward drift in pH in established tanks.
    USD 15.33
    USD 15.33
  • Carib Sea Arag-Alive Special Grade Reef Sand - 20 lb
    Bring the world's most exotic reefs into your home with CaribSea's Arag-Alive substrates. Helps maintain a proper pH for the life of your aquarium without the constant addition of chemicals, and creates a biological balance to discourage nuisance algae.
    USD 21.48
    USD 21.48
  • Carib Sea Super Naturals Peace River - 20 lb
    • Sizes and colors were selected to re-create natural jungle environments
    • Suitable for freshwater and marine aquariums with proper maintenance
    • Pre-washed, pH neutral & allows the beneficial bacteria to build colonies
    • Prevents reflections from the base of the aquarium from aggravating fish
    USD 18.24
    USD 18.24
  • Estes Nature Blends Gravel - Deep River - 5 lb
    • Marine and Reef Safe!
    • No rinsing required
    • Hides unsightly fish waste, and anchors down plants and Decor

    Regular Price: USD 3.49

    Special Price USD 2.99

    Regular Price: USD 3.49

    Special Price USD 2.99

  • Carib Sea Ocean Direct Live Oolite - 40 lb
    Each bag includes a packet of Bio-Magnet clarifier to reposition free-floating bacteria to where they are most active; sand beds, live rock surfaces, and to biological filtration media. Ocean Direct provides a thriving, natural aquarium in minutes!
    USD 28.95
    USD 28.95
  • Carib Sea Super Naturals Blue Ridge - 5 lb
    • Sizes and colors were selected to re-create natural jungle environments
    • Suitable for freshwater and marine aquariums with proper maintenance
    • Pre-washed, pH neutral & allows the beneficial bacteria to build colonies
    • Prevents reflections from the base of the aquarium from aggravating fish
    USD 2.99
    USD 2.99
  • Carib Sea Super Naturals River of Doubt - 50 lb
    • Sizes and colors were selected to re-create natural jungle environments
    • Suitable for freshwater and marine aquariums with proper maintenance
    • Pre-washed, pH neutral & allows the beneficial bacteria to build colonies
    • Prevents reflections from the base of the aquarium from aggravating fish
    • Prevents the unwanted light fixture reflections
    USD 49.99
    USD 49.99
  • Carib Sea Super Naturals Sunset Gold - 50 lb
    • Sizes and colors were selected to re-create natural jungle environments
    • Suitable for freshwater and marine aquariums with proper maintenance
    • Pre-washed, pH neutral & allows the beneficial bacteria to build colonies
    • Prevents reflections from the base of the aquarium from aggravating fish
    USD 28.18
    USD 28.18
  • Estes Special Spectrastone Gravel - Black - 25 lb
    • Marine and Reef Safe!
    • No rinsing required
    • Hides unsightly fish waste, and anchors down plants and Decor

    Regular Price: USD 12.99

    Special Price USD 11.49

    Regular Price: USD 12.99

    Special Price USD 11.49

  • Carib Sea Arag-Alive! Fiji Pink - 20 lb
    Bring the world's most exotic reefs into your home with CaribSea's Arag-Alive substrates. Helps maintain a proper pH for the life of your aquarium without the constant addition of chemicals, and creates a biological balance to discourage nuisance algae.
    USD 21.48
    USD 21.48
  • Carib Sea Instant Aquarium Moonlight Sand - 20 lb
    CaribSea's Instant Aquarium takes the guess work out of starting a new tank. This line of substrates offers a variety of gravels and sands water-packed with living, water-purifying bacteria, state of the art clarifier, and a complete water conditioner.
    USD 21.08
    USD 21.08
  • Estes Nature Blends Gravel - Shallow Creek - 25 lb
    • Marine and Reef Safe!
    • No rinsing required
    • Hides unsightly fish waste, and anchors down plants and Decor

    Regular Price: USD 15.99

    Special Price USD 13.99

    Regular Price: USD 15.99

    Special Price USD 13.99

  • Carib Sea Instant Aquarium Sunset Gold - 20 lb
    CaribSea's Instant Aquarium takes the guess work out of starting a new tank. This line of substrates offers a variety of gravels and sands water-packed with living, water-purifying bacteria, state of the art clarifier, and a complete water conditioner.
    USD 21.08
    USD 21.08
  • Carib Sea Super Naturals Torpedo Beach - 20 lb
    • Sizes and colors were selected to re-create natural jungle environments
    • Suitable for freshwater and marine aquariums with proper maintenance
    • Pre-washed, pH neutral & allows the beneficial bacteria to build colonies
    • Prevents reflections from the base of the aquarium from aggravating fish
    USD 11.60
    USD 11.60
  • Carib Sea African Cichlid Mix Ivory Coast Gravel - 20 lb
    CaribSea's cichlid gravels naturally buffer your aquarium water with aragonite, simplifying the process or replicatiing the water parameters of the great African rift lakes, and eliminating downward drift in pH in established tanks.
    USD 16.16
    USD 16.16
  • Carib Sea Super Naturals Gemstone Creek - 5 lb
    • Sizes and colors were selected to re-create natural jungle environments
    • Suitable for freshwater and marine aquariums with proper maintenance
    • Pre-washed, pH neutral & allows the beneficial bacteria to build colonies
    • Prevents reflections from the base of the aquarium from aggravating fish
    USD 2.99
    USD 2.99
  • Carib Sea Super Naturals Moonlight Sand - 20 lb
    • Sizes and colors were selected to re-create natural jungle environments
    • Suitable for freshwater and marine aquariums with proper maintenance
    • Pre-washed, pH neutral & allows the beneficial bacteria to build colonies
    • Prevents reflections from the base of the aquarium from aggravating fish
    USD 19.47
    USD 19.47
  • Carib Sea Super Naturals Snowy River - 5 lb
    • Sizes and colors were selected to re-create natural jungle environments
    • Suitable for freshwater and marine aquariums with proper maintenance
    • Pre-washed, pH neutral & allows the beneficial bacteria to build colonies
    • Prevents reflections from the base of the aquarium from aggravating fish
    USD 2.99
    USD 2.99
  • Carib Sea Super Naturals Sri Lanka - 50 lb
    • Sizes and colors were selected to re-create natural jungle environments
    • Suitable for freshwater and marine aquariums with proper maintenance
    • Pre-washed, pH neutral & allows the beneficial bacteria to build colonies
    • Prevents reflections from the base of the aquarium from aggravating fish
    • Prevents the unwanted light fixture reflections
    USD 49.99
    USD 49.99
  • Estes Nature Blends Gravel - Walnut - 5 lb
    • Marine and Reef Safe!
    • No rinsing required
    • Hides unsightly fish waste, and anchors down plants and Decor

    Regular Price: USD 3.49

    Special Price USD 2.99

    Regular Price: USD 3.49

    Special Price USD 2.99

  • Estes Special Spectrastone Gravel - Black - 5 lb
    • Marine and Reef Safe!
    • No rinsing required
    • Hides unsightly fish waste, and anchors down plants and Decor

    Regular Price: USD 2.99

    Special Price USD 2.49

    Regular Price: USD 2.99

    Special Price USD 2.49

  • Carib Sea Fiji Pink Reef Sand - 40 lb
    CaribSea aragonite is purposely engineered and free of impurities such as ash, metals, pesticides, and silica which allows you to create a safe and beautiful environment for your fish and invertebrates.
    USD 44.77
    USD 44.77
  • Carib Sea Super Naturals Jelly Beans - 50 lb
    • Sizes and colors were selected to re-create natural jungle environments
    • Suitable for freshwater and marine aquariums with proper maintenance
    • Pre-washed, pH neutral & allows the beneficial bacteria to build colonies
    • Prevents reflections from the base of the aquarium from aggravating fish
    USD 22.10
    USD 22.10
  • Carib Sea Super Naturals Snowy River - 20 lb
    • Sizes and colors were selected to re-create natural jungle environments
    • Suitable for freshwater and marine aquariums with proper maintenance
    • Pre-washed, pH neutral & allows the beneficial bacteria to build colonies
    • Prevents reflections from the base of the aquarium from aggravating fish
    USD 10.40
    USD 10.40
  • Carib Sea Super Naturals Tahitian Moon - 20 lb
    • Sizes and colors were selected to re-create natural jungle environments
    • Suitable for freshwater and marine aquariums with proper maintenance
    • Pre-washed, pH neutral & allows the beneficial bacteria to build colonies
    • Prevents reflections from the base of the aquarium from aggravating fish
    USD 19.47
    USD 19.47
  • Carib Sea Super Naturals Zen Garden - 5 lb
    • Sizes and colors were selected to re-create natural jungle environments
    • Suitable for freshwater and marine aquariums with proper maintenance
    • Pre-washed, pH neutral & allows the beneficial bacteria to build colonies
    • Prevents reflections from the base of the aquarium from aggravating fish
    USD 2.99
    USD 2.99
  • Estes Special Spectrastone Gravel - White - 5 lb
    • Marine and Reef Safe!
    • No rinsing required
    • Hides unsightly fish waste, and anchors down plants and Decor

    Regular Price: USD 2.99

    Special Price USD 1.99

    Regular Price: USD 2.99

    Special Price USD 1.99

  • Aqua One Decorative Gravel - Carnival - 500 g
    • Decorative gravel enhances the appearance of your aquarium
    • Provides an excellent cultivation site for beneficial bacteria
    • Designer substrate is made from natural, non-toxic stone
    • Suitable for use in freshwater and saltwater aquariums
    • Also great for decorating potted plants, candle holders, etc.

    Regular Price: USD 1.49

    Special Price USD 0.99

    Regular Price: USD 1.49

    Special Price USD 0.99

  • Carib Sea Arag-Alive Hawaiian Black - 20 lb
    Bring the world's most exotic reefs into your home with CaribSea's Arag-Alive substrates. Helps maintain a proper pH for the life of your aquarium without the constant addition of chemicals, and creates a biological balance to discourage nuisance algae.
    USD 21.48
    USD 21.48
  • Carib Sea Arag-Alive Special Grade Reef Sand - 10 lb
    Bring the world's most exotic reefs into your home with CaribSea's Arag-Alive substrates. Helps maintain a proper pH for the life of your aquarium without the constant addition of chemicals, and creates a biological balance to discourage nuisance algae.
    USD 14.03
    USD 14.03
  • Carib Sea Super Naturals Peace River - 5 lb
    • Sizes and colors were selected to re-create natural jungle environments
    • Suitable for freshwater and marine aquariums with proper maintenance
    • Pre-washed, pH neutral & allows the beneficial bacteria to build colonies
    • Prevents reflections from the base of the aquarium from aggravating fish
    USD 3.77
    USD 3.77
  • Carib Sea Super Naturals River of Doubt - 5 lb
    • Sizes and colors were selected to re-create natural jungle environments
    • Suitable for freshwater and marine aquariums with proper maintenance
    • Pre-washed, pH neutral & allows the beneficial bacteria to build colonies
    • Prevents reflections from the base of the aquarium from aggravating fish
    • Prevents the unwanted light fixture reflections
    USD 4.99
    USD 4.99
  • Estes Nature Blends Pebbles - Ocean Beach - 25 lb
    All Estes products are clear coated, using 100% environmentally- friendly high gloss resin. This state of the art process makes their gravel virtually dust free, and provides the best possible appearance and ease of use in your aquarium.

    Regular Price: USD 15.99

    Special Price USD 13.99

    Regular Price: USD 15.99

    Special Price USD 13.99

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