JBL Biotopol JBL Biotopol - Water conditioner for freshwater aquariums. Fish and invertebrates need to feel as much at home in the aquarium as in the wild Transform your aquarium water into biotope-like water to protect your aquarium dwellers. Clean aquarium water - optimal water quality. When setting up a new aquarium, during partial a water change and after the use of remedies. Tap water contains heavy metals, such as copper, zinc and lead. To make the water suitable to the requirements of the fish, it must also be free of heavy metals, chlorine and chloramine. Made suitable for fish by neutralising these substances using dedicated water conditioners. With its aloe vera, Biotopol also ensures protection for mucous membranes, gills, skin and fins. Aloe vera provides protection from stress, protects the fish’s mucous membranes noticeably and reduces the risk of disease with its vitamin B complex. Chelators enclose heavy metals and aggressive substances are removed during the next