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Re: NFC: Another Filter/Aquarium Question

Larry, I posted a similar question a few weeks back. If your tank will be
covered, run the water return tube into the cover and then take it to the
other end of the tank and reintroduce the fresh water there. This will give
you an end to end water flow. If your tank will not be covered, or if you
prefer, you can also run the water return tube under the gravel to the far
end of the tank. Either way will work. I prefer to place it in the cover as
it hides the tube from view on the exposed wnd of the tank.

Let me know if this doesn't make sense and I can try to send you a diagram
or something.


Are undergravel filters a necessity?  In large tanks can you get away with
just a gravity fed wet/dry system that just pumps the water back in the
tank?  I'm designing and building a tank and stand that is enclosed at one
end so it can stick out in the middle of a room.  I'm running a pvc elbow
near the top of the tank at the enclosed end that will run down to the

My concern is areas of stagnant water that an undergravel filter would
I plan on running the return line down the length of the hood and drop the
water back in at the other end of the tank.  I'm also debating to instead,
run the pvc return line down into the tank and direct it from the bottom to
flow away from the enclosed end.  Any input on this...anyone?