100% natural and safe for all plants, animals and fish. Beneficial bacteria breaks down algae, reduces ammonia and nitrogen and improves oxygen levels. Use to seed and maintain biological filters and dissolve organic sludge and slime. Best used when water temperatures are above 55 degrees.
Summer usually means increased pond water loss due to evaporation, which of course leads to topping off our ponds more. You should always add dechlorinator when topping off the water level of a pond. Any amount of chlorine (such as that found in treated water) can be harmful to your fish. Even if it is not enough chlorine to mean immediate death of the fish, this chlorine can still cause harm to proper gill function.