Seachem Onyx Sand Freshwater Substrate - 7.7lb Ecotech Marine or trickle filter so water

or trickle filter so water passes through the resin efficiently

5 watts at 50 Hz

Best use: Tough algae removal from glass aquariums

Shrimpery with lid

Why Saki-Hikari Marine Carnivore Fish Food Works

Seachem Onyx Sand Freshwater Substrate - 7.7lb Ecotech Marine or trickle filter so waterOnyx Sand is a porous clay gravel for the natural planted aquarium. Being carbonate rich, Onyx Sand provides an advantage to any plants able to utilize bicarbonates. Onyx Sand is most effective when used alone as an integral substrate bed, but it may be mixed with other gravels. Gravel modifiers such as laterite are not necessary. Onyx Sand is not chemically coated or treated and will not alter the pH of the water. Although pre washed, it may be