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white growth

  1. Beginner Freshwater Aquarium
    I have a 55 Gal Aquarium which I havent put any fish into yet because I am cycling the tank (Fishless Cycle with Ammonia). Im about 2 and half weeks into the Cycling phase and I notice this..... its like a white growth on the rubber suction cup of my water circulator. (also noticed it on the...