Our Fish Pond Chlorine Removal Tablets contain trichloroisocyanuric acid, dichloroisocyanuric acid, conditioner. It can help improve water quality, soften water composition, clean fish pond water quality, deodorize and remove algae. The way to use it is very simple: just put the right amount of chlorine removal tablets into the fish pond. It can purify water quality, create the best and comfortable environment for aquatic organisms, and make aquatic organisms live healthier.