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ADA Penac W 200g
Penac W helps to improve the substrate environment. Penac W should be applied to the very bottom layer of substrate.
It can also be added to the water at every water change - add one level spoonful for every 60l.
Penac W prevents the substrate from becoming anaerobic. It can also be added directly to the aquarium in the case of oxygen shortage within the aquarium tank.