01
Representative imageBlack lava rock, 3/4 inch
1 lb and 5 lb bags
Below the surface.
Down to the detail.
Start with the water you keep and the animals that live in it. Compare stone, sand, and wood by their actual size, preparation, and confirmed chemistry.
Driftwood
Graded wood and, when real pieces are photographed, individual specimens. Species and preparation details stay visible when confirmed.
Flagstone
Hand-picked flat pieces sold by weight. Shape and thickness vary; plan support and clearances around the actual stones.
Gravel and drain rock
Gravel and leach rock for projects that need an open aggregate. Match the actual grading to your equipment and animals.
Lava rock
Black and burgundy lava rock in 3/8 and 3/4 inch grades. Compare the texture, size, and bag weight before planning a hardscape or filter basket.
Pebble and river rock
Rounded stone and mixed pebble. Actual size, finish, and water chemistry must be confirmed for the material you select.
Sand
Sand sold by bag weight. Composition and measured grain size determine its appropriate uses; the product description will show confirmed information when available.
Meet the material.
All materialsRepresentative imageFrom $4.99
02
Representative imageBlack lava rock, 3/8 inch
1 lb and 5 lb bags
03
Representative imageBlack pebble
1 lb and 5 lb bags
04
Representative imageBurgundy lava rock, 3/8 inch
1 lb and 5 lb bags
Find your habitat.
Read before you build.
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3/8 or 3/4 lava rock: which size for substrate, filters, and hardscape
Choose the grade for the compartment, animal contact, and maintenance access rather than a universal size rule.
Black lava rock and red lava rock: is there a difference in the tank?
Color can reflect oxidation, but color alone cannot confirm composition, chemistry, or suitability.
Bog filter gravel: why stone size decides whether it works
Match grading to the actual filter design; a nominal 3/8 inch label is not a universal wetland specification.