i'm hesitant to keep this thread going as we all know the risks involved here, but i would like to add a little clarification. i'm not talking about putting CH granular in a hayward cl220, i'm talking about CH tabs. that would eliminate any need to "modify" the chlorinator, assuming the CH tabs dissolve correctly in a pressure feeder (the CH tab feeders i've seen are erosion rather than pressure)

also, i wouldn't even put CH granular in a skimmer if i had a trichlor feeder on the system, with or without pucks in it.

so back to the original question, would CH tabs work OK in a brand new, never been used cl220?

j