By the next morning (yesterday), the tank was very cloudy, almost completely white. It had old, undissolved pellets floating around everywhere with this gel-like stuff all over it. White cotton like strings were hanging off the bottom of one of the O's. One O and the Pleco had died. The other poor fella, Rocky, was a true fighter and looked like he had white sores starting on his side.

I immediately tested the water and the pH was so low, it was off the charts! Rocky was was lying on his side on the bottom of the tank. I knew the low pH was burning him up and I had to get him out of there soon!
I set up a 1 gal size fish bowl for him, temporarily, until I could get the tank under control. It was tap water, treated with stress coat, and the same temp as the tank (78).
When I put He seemed to be happy at first, but then when I put in a small air stone to give him oxygen he went nuts, darted around, shaked like he was having a seizure and then suddenly fell over onto his side a floated to the bottom of the tank. I thought he was dead for sure. About ten minutes later, I came back to give Rocky a proper burial and when I put the net in the water, he shot up straight and started swimming around again.
I went to PetSmart with my sob story and was given "Proper pH 8.2" says it is perfect for salt water, brackish, & African Cichlid Aquariums. It automatically sets pH at 8.2 and increases carbonate hardness. I did a 25% water change, put in a new filter cartridge, and added the stuff and Rocky because the bowl was gettin too cold. Soon the water turn brown, murky and cloudy. Later when I tested the water, it had and 8.2 pH, but the water softness was at zero and the alkalinity was high. Everything else was OK. (I have the recommended amount of salt in the tank also).
This morning the water didn't look much different. But Rocky was still alive! So I called PetSmart to find out what I should do about the water softness and murkiness. The clerk told me O's like soft water and the murky water should clean up in a couple days. I now believe I was given the wrong product because the clerk also told me Oscars are American Cichlid's and are very different from the African's and need a lower pH. How can I safely lower the pH to the right level?
Today Rocky swam around some, rested on his side some, but wouldn't eat. His color still looks poor and I believe he has HITH and Ich or some other disease because although the white sores on him look better, they're still there. I bought some "Quick Cure" for "Fast Relief for Ick & Other Parasites". When I read the directions, it said to remove the carbon from the filter before treated and replace 24 hrs later. However, I'm afraid to remove the carbon because I want the tank to clear up. What should I do? Please help!
I already had a ten gallon tank with an Aqua-Tech 5/15 filter and a heater. I've always been told that 1 inch of fish, minus the tail, for every gallon of water. So I thought I would be OK for a short time. I plan to get a 100+ tank later, once I can effectively maintain the 10. The (2) O's and (1) Pleco was all I had in there, and now I just have Rocky. He has a lot of heart - please help me save him. Is there anything else I can do?



As for the tank, yes it was only a ten gallon. We were supposed to get a few community fish - guppies-danios-etc. Instead my husband and I fell in love with the baby oscars
and had to have them. We knew a few other proud owners and they were always to happy to let us watch the O's eat interesting delicacies like the beef from a Big Mac. Since we knew how messy they could get we let our oldest daughter pick out a baby pleco. I knew we would have to upgrade the tank size soon, but I wanted to learn more about them first. Glad I did.
I'm getting Cycle and Melafix tomorrow. I won't get another pleco. I thought it would help keep the tank clean, but while reading your forum I found out that they are messier the the O's! I'll take your advice on the Cory Cat.
Thank you...again...from Rocky's Human.
Oscars are tough creatures!

