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sick columnaris help

  1. Betta Fish Diseases and Emergencies
    Housing What size is your tank? 20 Gallon Long What temperature is your tank? 79 Does your tank have a filter? Yes Does your tank have an air stone or other type of aeration? No Is your tank heated? Yes What tank mates does your betta fish live with? Cories, black neons, and 1 nerite snail...
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