hehehe how about this brain storm... alright so what I'm thinking is cut some sort of foam or sponge into a triangle(so it'll fit in the cornor, and to help it kinda blend in I'll use a color that matches my gravel), place a sort of lift tube in it about mid way to 3/4 down(possibly 3/4" diameter clear tubing so that its not too noticeable) . Above the sponge drill holes into the tube to let the water passing through the sponge escape. To cause the water to flow through the assembly use an air pump and stone incerted into the tube, the bubbles going up through the tube cause the water to rise and pass through the holes and be replaced/displaced by water elsewhere in the tank. OK so that all sounds normal to me..but thats gonna cause surface agitation right? Well what if I carried that lift tube all the way above the surface of the water? The bubbles will break the surface within the tube and not cause a lot of water movement at the surface ...right? Is this what everybody does? ha did I miss something here?
gemme your opinions and feedback!