That sucks man 7 fish lost, we have gone thru the same thing on this journey... The cipro is what I would suspect is giving you the problems with the fish and cloudy water?? You got the CP from the eBay guy right? I did this time around too, but I don't have cloudy water and haven't and just put a blue line angel and a yellow head butterfly directly into CP, floated and dropped and fish are eating and acting fine. I would think the CP isn't the issue. The water I am using with the system was from the hose outside with a water conditioner, so nothing special there. Top off water is with RO