09-19-2008, 11:06 PM
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The picture doesn't show us anything, so that is useless.
The best treatment for fungal infection (which is what this sounds like) is fungus eliminator. If there is a question about whether there is also a bacterial infection going on at the same time (not uncommon for bettas) then I would suggest using methylene blue at the same time as the fungus eliminator. Follow all instructions on dosing for both medications.
Do not substitute other meds for either of these, as not all meds can be mixed safely. Do not use salt when using fungus eliminator due to the amount of salt in the med. Use the treatment for 10 days, even if the fish looks better before then.
(If there are live plants in the tank you will want to either remove them before treatment, or treat in a quarantine tank. Treating in the main tank will help to ensure that any fungus and/or bacteria that is in the water column or anywhere else in the tank would also be destroyed. Plants can be kept in a bucket of water during treatment, as could the white cloud. Simply run an air stone in the bucket. White clouds are minnows and can handle cooler water temps, so if you start with room temp water in the bucket and acclimate plants and fish to the bucket water, they should do just fine in there for 10 days. Be sure to acclimate them again upon return to the main tank.)
One of the fish needs to move because the meds are going to be too potent to be safe for the white cloud.
In regards to the test results and lack of cycling you referred to....
From the results you posted it shows that the tank is indeed cycled. An uncycled tank would not show a nitrate level. Because there is no nitrite, but there is nitrate, that tells me that something is causing ammonia to spike... which could be from a number of things.
The first place I would look for that added ammonia would be the food. What are you feeding the fish? How much and how often? How long has the white cloud been in the tank?
The more information you can provide, and if you can get a clearer picture, the easier it is for us to help you.
Good Luck to you and your fish!