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Help with a neon tetra


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I just noticed that one of my neon tetras eyes looks like it’s gone kinda or like clouded over but it’s more shinny than cloudy… it’s really hard to explain, but I’ve attached photos so you can see what I mean. I have no idea what is wrong with her. Can anyone take a look and let me know what I can do for her or if it’s even dangerous, please? Thank you so much! I’ve never had this issue and I’m at a loss about what to do about it. Her tank mates are a betta, a bristle nose pleco and 8 other neons. I’ve he her for about a year and a half. Water parameter for more information:

20 gal

ammonia- 0

nitrite- 0

nitrate- 20

PH- 8.0

KH- 10

water temp- 80 F  



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Cloudy eye can be caused by poor water quality injury or a bacterial infection I would increase water changes for a couple of weeks if you see no improvement or it's getting worse after that then I would do a course of kanaplex

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