03-07-2012, 02:13 PM
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Originally Posted by kangy
hmm didn't think about that. The sponge in the 10g (behind the wood) is laying horizontally along the bottom, and you were not kidding about how much that single sponge absorbs. The next time I have my arms in there I'll experiment with the dual sponge. So you are saying to keep the lift tube how it is but rotate the sponge so they point down towards the substrate, still along the wall or do you have your's at a 90 degree coming from the wall along the substrate? Not sure if I could pull that one off with the small amount of floorspace I have left. I wondered about that though, the lift tube is all the way extended and that is as low as I could get the sponges. I have the heater directly under it with the thought that as it heats the water it will rise from the bottom past the sponge.
I did this in my 29g which is deeper. I like the return at the surface, it creates a slight current across the surface which is probably good. But that means the lift tube at full extension still won't reach the bottom, so I thought, h'm, rotate the sponges down. Mine are at less than a 45 degree angle, and partly behind a bit of wood.