Substrates & AquascapingCaribSea
Live sand is a great choice for new reef tank setups as it clears quickly and contain millions of live bacteria, speeding up your tank's cycle. Bahamas Oolite sand is one of the most attractive substrates available for saltwater aquariums, but due to its small grain size, it can get blown around more easily and should only be used in aquariums with lower amounts of flow; contains live bacteria, small grain size: 0.25 - 1mm, ideal for low flow aquariums.
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Substrates & AquascapingUltum Nature Systems
The Basin Wood - Large is a natural aquarium driftwood centerpiece, 20+ inches long, prized for its exceptionally high-detail surface of deep grooves, tight knots, and weathered twists; provides natural planting pockets for epiphytes, surface area for beneficial bacteria, and a mature, ancient look.
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Substrates & AquascapingUltum Nature Systems
The Basin Wood - Medium is a natural aquarium driftwood piece, 12-16 inches long, prized for its exceptionally high-detail surface of deep grooves, tight knots, and weathered twists; provides natural planting pockets for epiphytes, surface area for beneficial bacteria, and a mature, ancient look.
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Substrates & AquascapingUltum Nature Systems
The Basin Wood - Small is a natural aquarium driftwood prized for its exceptionally high-detail surface, deep grooves, tight knots, and weathered twists; provides natural planting pockets for epiphytes like Anubias and Bucephalandra, surface area for beneficial bacteria, and a mature, ancient look. Single, 5 Pack, and 10 Pack.
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Substrates & AquascapingFluval
Native to wild Betta habitats, Tropical Almond Bark will bring a natural look to your aquarium while helping to establish ideal water conditions. It releases tannins and other beneficial compounds that will help boost the immune system of your fish, lower their stress and tint the water a beautiful shade of amber; lowers pH to support ideal water conditions.
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Substrates & AquascapingFluval
Native to wild Betta habitats, Tropical Almond Leaves will bring a natural look to your aquarium while helping to establish ideal water conditions. They release tannins and other beneficial compounds that will help boost the immune system of your fish, lower their stress, and tint the water a beautiful shade of amber; lowers pH to support ideal water conditions.
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Substrates & AquascapingAqua Natural
Aqua Natural Betta World - Diamond Black Substrate (1lb) is a natural black quartz gravel for betta fish tanks and bowls. The eco-friendly, non-toxic substrate is chosen to enhance betta coloration and has minimal effect on water pH.
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Substrates & AquascapingAqua Natural
Aqua Natural Betta World Jade is a 1 lb bag of polished natural jade aquarium pebbles for betta tanks. The 100 percent natural, non-toxic stones are selected for minimal impact on water chemistry and should be rinsed before use.
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Substrates & AquascapingAqua Natural
Aqua Natural Betta World Mini Lava Rock is an eco-friendly, non-toxic 1-pound substrate with minimal effect on water chemistry; rinse before use to showcase betta fish with visual interest.
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Substrates & AquascapingAqua Natural
Aqua Natural Betta World Purple Diamond Substrate is a 1-pound eco-friendly, non-toxic decorative substrate for betta aquariums with minimal effect on water chemistry.
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Substrates & AquascapingAqua Natural
Aqua Natural Betta World Rose Cream Substrate (1 lb) is an eco-friendly, non-toxic substrate that adds visual interest to Betta aquariums with minimal effect on water chemistry.
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Substrates & AquascapingAqua Natural
Aqua Natural Betta World Tutti Frutti Substrate is a 1 lb bag of colorful small gravel designed for betta aquariums. The 100% natural, polished agate stones are non-toxic, eco-friendly, and have minimal effect on water chemistry.
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Substrates & AquascapingCaribSea
Live sand is a great choice for new reef tank setups as it clears quickly and contain millions of live bacteria, speeding up your tank's cycle. Bimini Pink sand contains a wide variety of particle sizes from small 0.5mm grains of sand to larger 5mm pieces of shell; contains live bacteria, varied grain size: 0.5 - 5.0mm.
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Substrates & AquascapingFluval
Bio-Stratum features a 1-3 mm grain size, which is great for smaller aquariums, or as a top layer in larger systems. Infused with beneficial nitrifying bacteria, it's an ideal substrate to start a new planted aquarium with, especially if you plan to keep plants with more delicate root systems; collected from the foothills of Mount Aso volcano in Japan.
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Substrates & AquascapingUltum Nature Systems
The Black Lava Rock is a highly porous natural aquarium hardscape rock for planted tanks and African Cichlid setups; color palette from black to gray. Millions of tiny holes provide massive surface area for beneficial bacteria; coarse texture is perfect for anchoring mosses, ferns, and epiphytic plants. available in a 15LB size.
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Substrates & AquascapingUltum Nature Systems
The Black Lava Rock Cave is an extremely porous natural aquarium hardscape stone with a pre-drilled cave, ideal for small cave-dwelling animals such as crayfish and plecostomus; acts as a massive biological filter with ample space for beneficial bacteria. Small, Medium, Large, and XL sizes.
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Substrates & AquascapingUltum Nature Systems
The Black Lava Rock Mound is an extremely porous natural aquarium hardscape stone, dark black and remarkably lightweight, with multiple pre-cut areas; acts as a massive biological filter and provides safe resting spots for small fauna and perfect pockets for attaching epiphytic plants like Anubias, Bucephalandra, or mosses.
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Substrates & AquascapingUltum Nature Systems
The Black Ridge Stone brings a rugged, natural look to aquarium hardscapes with dark gray, charcoal, and earthy brown tones; heavily weathered surface defined by pronounced ridges, grooves, and layered formations. Natural variation makes it well-suited for organic, uneven hardscape appearances. 30LB pack.
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Substrates & AquascapingCaribSea
CaribSea Black River Rock is an all-natural hardscape stone (typically 3-5" rocks, sold in 12 and 25 lb sizes) that creates a dramatic dark backdrop for planted freshwater aquascapes; it is completely inert, ready to use, and will not alter pH, hardness, or alkalinity.
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Substrates & AquascapingUltum Nature Systems
The Black River Slate is a natural aquarium hardscape rock with a black to dark grey color with occasional brown and white streaks; semi-round water-worn shape for authentic river or lake-inspired aquascapes, waterfalls, or spawning media. Suitable for terrariums and paludariums. 5LB to 30LB packs.
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Substrates & AquascapingUltum Nature Systems
The Black Slate is a natural aquarium hardscape rock with rich black and gray tones accented by subtle white streaks; relatively flat with great stacking potential, perfect for layering or building structures in an aquascape. Excellent base for mosses; wrap varieties around it for moss-covered pieces. 5LB to 30LB packs.
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Substrates & AquascapingUltum Nature Systems
The Black Star Lava Rock is a highly porous volcanic aquarium hardscape rock; unlike jagged lava rock, it features a smoother, rounded pebble-like shape ideal for fish with delicate fins. Massive surface area for beneficial bacteria; perfect for anchoring mosses, Anubias, and Bucephalandra. 5LB to 30LB packs.
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Substrates & AquascapingAqua Forest Aquarium
Blackish Lichen Stone is a grayish dark stone with natural crevices and texture resembling exotic stony mountains; natural mountain sceneries can be recreated in miniature inside the aquarium. Ideal for Nature-style planted or freshwater aquariums; may raise hardness and pH slightly; minimum order 10 lbs; approx. size 2-10 inches.
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Substrates & AquascapingUltum Nature Systems
The Blistered Driftwood Sticks are a natural aquarium hardscape wood with long, straight profiles and a distinctive, bumpy bark texture; position vertically to mimic submerged reed beds and flooded forest roots, or lay across the tank base to recreate fallen timber along a riverbed. Great for wedging epiphytic plants like Bucephalandra or tying on mosses. Single, 5 Pack, and 10 Pack.
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Substrates & AquascapingUltum Nature Systems
The Blood Stone is a rich red natural aquarium hardscape stone, one of the smoother varieties for aquascaping; deep red hue contrasts beautifully against plants and substrate. Smooth surface is gentle for tanks housing fish with delicate fins; striking accent for terrariums and paludariums. 10, 20, and 30 pound packs.
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Substrates & AquascapingAqua Forest Aquarium
Blue Fin Stone is a slate-like flat variation of Frodo Stone from Poland, great as an embellishment or finishing touch piece; it has a unique rugged texture and cracking pattern with colors from brownish to gray, great for Iwagumi style and with wood. Mostly inert; available in Regular, Medium, Large, and X-Large mixes.
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Substrates & AquascapingUltum Nature Systems
The Blue Mountain Seiryu Stone is a darker, bluish-grey natural aquarium hardscape stone with striking white veins; signature craggy texture and intricate details for natural-looking mountainous hardscapes or Iwagumi layouts. Contrasts beautifully with vibrant green or red plants. 5LB to 30LB packs.
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Substrates & AquascapingBlue Treasure
Blue Treasure Calcium Sand (1-2mm, 5kg) is a natural coral-based aquarium substrate composed of calcium carbonate. It buffers pH around 8.2, raises KH, and slowly releases calcium and trace elements while its porous structure provides surface area for beneficial bacteria, making it suitable for marine and African cichlid aquariums.
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Substrates & AquascapingBlue Treasure
Blue Treasure Calcium Sand (2-3mm, 5kg) is a natural coral-based aquarium substrate composed of calcium carbonate. It buffers pH around 8.2, raises KH, and slowly releases calcium and trace elements while its porous structure provides surface area for beneficial bacteria, making it suitable for marine and African cichlid aquariums.
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Substrates & AquascapingSeaView
The SeaView Blue/Black Aquarium Background is a double-sided decorative background (12 x 24 inches) applied to the outside of a freshwater or saltwater tank. With blue on one side and black on the other, it adds depth, hides cords and filters, and creates a cleaner, more immersive look.
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