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establishing a filter

  1. How long to establish new filter?

    Beginner Freshwater Aquarium
    I upgraded my 75-litre Aqua One AR510 to a 165-litre Aqua One AR850. Both have a filter box that sits above the tank with two boxes of filter material (ceramic noodles, sponge on top, cartridge with filter wool and carbon on top of that). The filter boxes on the AR510 are just smaller in size...
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