MissAbby Posted April 22 Share Posted April 22 Last week my bigger Moor developed these two white lumps on the edge of their tail fin. The smaller one has had some whiteness on one side of their tail fin for while, but instead of being lumpy it's much more flat and I assumed it was just a fin injury until the lumps appeared on the other one. Is this cotton wool disease? Is it something else? I haven't gotten a chance to do a water change since before spring break so I'm definitely over due for one (photo of strip attached). And the only other tank mate is a single nerite snail at the moment. Link to comment Share on other sites More sharing options...
Colu Posted April 22 Share Posted April 22 Looks like an injury to the fin I would add some aquarium salt 1 table spoon for 3 gallons for a week just remember to only put back in what you take out so if you do a 3 gallon water change put 1 table spoon of salt back in as salt only removed though water changes and monitor give an update if you notice it get worse I would test your ammonia just in case something off @MissAbby Link to comment Share on other sites More sharing options...
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