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Discussion Starter · #1 ·
110 Gallon tank, 30 convicts, 1 pleco, 1 big ol' oscar. Newly installed filter media using activated charcoal in a magnum 350 canister filter.

I took over this tank from a lady about two weeks ago. The tank was very dirty, and not maintained well. I cleaned the tank and did almost a complete water change during the transfer of the tank. I treated the tank for parasites, and then fungus twice because the oscar and pleco were showing signs of fungal growth.

Today, I took a look at my convicts and noticed something very strange. It looks like they are losing their colors? When I got them I had a mixture of albino, and various striped convicts. Some were very dark and if I remember right didnt have much striping because they were so dark. Today, I look at them, and the older larger fish that were very dark are now very light with some striping.. Some of the youngsters are completely albino. One thing for sure is that none of them have the very dark coloring that some of them had. Strange. I am trying to use up a bottle of Omega One Super Color small floating pellets. And the oscar is getting a few pieces of large cichlid gold pellets. Is it the food I am feeding them? The Omega One says it is for all tropical fish and appears to have all the necessary vitamins, etc. I believe that the fish originally were just eating the large cichlid pellets (the little guys got left overs apparently).

The fish all appear healthy otherwise.
 

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Colour change could be from stress due to the move and large water change, the medication treatment or could also be the change in diet.

If the fish appear to be happy and healthy and are eating well then i wouldn't worry too much.

Also the charcoal will be almost useless since you have done the meds treatment. And on the flip side of the coin the meds treatment wouldn't have worked so well with the charcoal present.
 

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Discussion Starter · #3 ·
I did remove the carbon filtration for several days while the treatments were in place. Two days ago I put the carbon back in and the water is back to crystal clear color now. It was green.. lol.
 
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