SpongeFilter Posted October 27, 2020 Share Posted October 27, 2020 I have a guppy with a fin that looks like it's covered in cotton. I observe this aquarium up close several times a day and this snuck up within the last 12 hours. I can't for the life of me get a picture of her. I'm warming up a quarantine tank. What should I treat with? Any other advice? 0 Ammonia 0 Nitrites 20 Nitrates Ph 7.4 76 degrees I don't have a hardness test Link to comment Share on other sites More sharing options...
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