PVC adapters and unions, as well as many other critical components of pond plumbing supplies, are listed in this section of our site. Many are hard to find but we try to make them conveniently available.
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.