QUOTE(Closed @ Jan 14 2008, 11:29 PM)

ok umm i don't really test the ammonia, nitrite, nitrate, and Ph level of the tank and tap but i have a 100 gal tub and it has been running for around a year now.
That is the first thing we will need to know. If you don't have a test-kit it would be important to get one as soon as you can. The local fish store should test it for free if you take a sample. But, any serious fishkeeper should not be without a test-kit. If you don't know what's going on in the water, diagnosing is very difficult. Sometimes bad water quality will produce very similar symptoms to diseases. There are several possible causes for the symptoms you describe but we'll need to know the water first.
QUOTE(Closed @ Jan 14 2008, 11:29 PM)

the water gets changed around once every month.
This is far too infrequent and will lead to a build up of organic waste and high nitrates which can easily make your fish sick. Gfish really need water changes every week to maintain good water quality. Depending on your level of filtation it might need to be more. Do you know how many gallons per hour your improvised filter pumps? It sounds a clever invention by the way. On a 100g tank you're really looking for somewhere around x10 tank vol p/hr. If you're understocked you could go with a little less.
Before we get the water results, I would do a large water change to see if the fish shows any improvement at all. Reserve enough water to test before doing the change.
Post back and let us know how things are.
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