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bio-film

  1. Fluffy like things in aquarium?

    Beginner Freshwater Aquarium
    So i have been noticing that in the wall of my tank there is like a bio-film that makes it a little bit blurry to see in the aquarium and there is little like fluffy things on it kinda stringy but not straight and is white, it is also on my plants and some rocks that hold the plant down, there...
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