Skimmer Help

Eshopps psk100H collector cup overflowing

All I did was rinse the skimmer out with plain water, no soaps were used. I will just leave it open for a few days and see if it improves.

 

Ok, I think I found the problem. I have been using Tetra AquaSafe Plus dechlorinator, so I put the correct amount in a container and filled it with water and as it was filling it foamed like crazy, then I let it sit for fifteen minutes to settle and came back and added more water to the same batch and it still foamed up bad. I also then put a sipping straw in it and blew air into it for twenty seconds and it still foamed. Then I also have some API dechlorinator and did the same test and did not get any foam, just a few bubbles as filling. I will do some water changes over the next few days to see if this is really the problem.