mbwells Posted June 20, 2022 Share Posted June 20, 2022 Dear friends, I could really use some advice on a concerning development in my 40 gallon breeder aquarium. I have a yellow white cloud (Tanichthys kuehnei) in my tank with a bulge on his head and slightly protruding eyes (can't see in this photograph). I change my water every 2 weeks (just did one last evening in fact) and my water chemistry is as follows: pH: 6.4 Hardness: 75 ppm Alkalinity: 0 (I use Controsoil, which buffers the water to 6.4 using an organic acid buffer. So, the alkalinity reading *should* be 0.) Ammonia: 0, as you'd expect at such a low pH Nitrite: 0 Nitrate: 20 - 50 ppm The temperature ranges between 72 and 74 F (I don't use a heater) Fish: 14 Tanichthys albonubes, 16 Tanichthys micagemmae, and 16 Tanichthys kuehnei I'm concerned by the appearance of this disease because it indicates that I am either not performing routine maintenance (which is not so), or, more alarmingly, that the water parameters I'm keeping the fish in aren't appropriate for the species. I'm also keeping them with Tanichthys albonubes and Tanichthys micagemmae, and these water conditions seem to be doing quite well for them. The other Tanichthys kuehnei fish also seem fine, though, I have to say. They're growing and spawning. I don't know what the bulge on the fish's head is. It *could* be an injury I suppose, but I know that in injuries typically only 1 eye is affected. As a precaution, I'm already treating with Maracyn, since the eyes are slightly bulged. The fish's activity and appetite seems normal, so hopefully I caught it early enough to treat. @WhitecloudDynasty any advice on how this could have happened, and if I should treat further beyond Maracyn? Link to comment Share on other sites More sharing options...
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