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co2 poisoning

  1. All fish died overnight

    Freshwater and Tropical Fish
    So...here is my sad story. This morning I woke up to a 55 gallon tank full of dead fish. :cry: I would appreciate anyone's help in trying to find the root cause, so that I can avoid making the same mistake again in the future. Tank parameters: 55 gallon, live plants, sand substrate...
  2. CO2 Poisoning???

    Beginner Planted Aquarium
    I woke up this morning, and ALL of my fish were gasping for air at the top of the tank. My tank had just recovered from ICH yesterday and so I replanted some plants and hooked up my DIY C02 system again. I usually do not keep an air bubbler being that the plants do the job. But when I woke...
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