Ok here is the deal. I have had a large loss of fish and I don't know why. The water paramters are all fine I just tested them. I lost my entire group of wild caught Lemon Jakes, a large Syno. Eupterus, my male Albino Yellow Lab, my wild female Flavescents jumped out of the tank, and my wild male Borleyi up and croaked. I also lost an entire group of growouts of the yellow labs and white labs and around 8 blue eyed plecos. I have done nothing to the system except pull the UV sterilizer because it was leaking. Could that be the problem? These fish have shown no signs of disease. My albino lab was perfectly healthy looking, swimming and eating when I got up and I just went down there and he croaked. I took the female out and put her in with the regular yellow labs. I don't know what else I can do.