Clear Pond Activated Carbon 5 lb.
Clear Pond Activated Carbon
(also known as activated charcoal or coal) is a form of carbon
that has been processed to make it extremely
porous and thus to have a very large surface ... degrading fish waste, plants, algae and other chemical waste from runoff. For best results, replace carbon
every 30 days. 5 cups treats 100 gallons.
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