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high ammonia and nitrites

  1. Betta Fish Diseases and Emergencies
    My veil tail male Betta's tank was overtaken by black algae, slimy green threads of something, different types of algae-looking stuff. He lives with 3 Otos and has live bamboo along with artificial plants. He developed finrot along his dorsal and back, and I started him on Maracyn 2. The people...
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