never use aqua plus on with skimmer. i did that exact same thing when i started my salt water. i have the exact skimmer as you and it happened to me when i used aqua plus. just use prime if you have to use one.

My daughter has the same skimmer on her 50 gallon and it's been going crazy ever since she got it. I don't understand what it could be either. She doesn't use conditioners, she uses RO/DI water, doesn't over feed. I called J&L where she bought it and he suggested she add carbon to the skimmer box that goes with it in the return section, hasn't helped yet and it's been a week already. The skimmer cup is set at the highest position possible and it fills 3 times a day.
Anyone know anything about this?

I dont see what carbon in the return would do ? :question:

asherah

something about filtering out whatever might be causing the skimmer to go crazy...