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  1. Swapping filters between two tanks?

    Beginner Freshwater Aquarium
    I have two well established tanks right now. One is a 20L community tank while the other is a 10 gallon that only has a male betta. I figured out recently that I am wasting filtration capacity with each of my filters. The community has a filter good for 10 gallons while the betta has a filter...
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