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undergravel filter

  1. DIY
    I need to redo my tank's substrate because the tank's pH is too high. The undergravel filter has a powerhead. I was thinking of using a bottom layer of activated carbon topped with porous clay pebbles. Has anyone ever tried something similar? Or know of probable complications? Thanks.
  2. General Planted Tank Discussion
    I currently have a small 10gal freshwater tank with an under gravel filter or ugf setup. I would like to add a Christmas moss wall and some moss patches on some rocks and such. My tank tank has 2 small powerheads on the lift tubes and I added a couple air stones behind the tubes against the...
  3. DIY
    I think I know what most people will say... But I still see it as theoretically possible... I want to create a system using undergravel filters that can run indefinitely. My idea is that by having the substrate heavily rooted in multiple layers (a top layer of shallow rooted plants like Narrow...
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