Thanks Bro for your reply,
Am actually considering OR6500 X 1 as my return pump for my 6 ft X 2 ft X 27" (H) tank.
After looking at your return pumps, it be more worth while to top up $ for the reeflo. Bro, you got any comments for the return pumps? Is it stilll powerful after the head loss? Wat about the humming sound? As I said, really inspired by your tank. If next time you see my tank similar to yours, dun mind tat I have 'copied' some. Heehee...