had that problem with my orino's if any of you can remember last month sometime. Within a few days of feeding, they just stopped eating, and were getting white cloudy spots on them. Figured out the water was toxic, soon there eye's were cloudy too. Don't add S&#T, get them out into water about the same temp. Drain the tank out completely, scrub it with soap and water, and refill it. My recommendation is get yourself an R/O system for your faulcet, it gets rid of all unwanted things in your water for fish, usually around $45.00, fill the tank with all R/O water, and get the R/O mix for freshwater aquariums, around $5-8. Don't add anything else to the water, and within a day or two you will notice the white cloud on their backs going away. Also, whenever you add water due to evaporation, or a water change, use the R/O water. My pbass have never looked more healthier since doing this, and my parameters are damn near perfect. Good Luck !!! Get them out quickly, the more crap you add, the more your making your water toxic to them. There fish not people, so their tolerance is low.
yeah that cascade works well but im going to buy the fluval fx5 SOON! but now i only have 4 pbass, it just upsets me i finally had an ocel and it died and my biggest wild orino died... kind of frusterating!