Hi all,
I have two RES's and the last time I cleaned my tank which was about 2-3 weeks ago, I noticed that the filter sponge was pink (which it was never before.) I checked them and they looked fine, no cuts or weird symptoms. So I left it alone, changed the filter and after another cleaning today, I noticed the filter is pink again! Does anyone know what it is? Are they bleeding? They look and swim fine. I'm worried that there is some hidden problem that I can't find.
Please Help!
Thanks,
LT

