ANYONE WITH EXPERIENCE WITH DOUBLE HELIX, TURBO-TWIST 3X AND THE TETRATEC UV5 UV STERILIZERS? CAN'T FIND ANY REVIEWS WRITTEN ON THESE UNITS. HOW THEY COMPARE AGAINST ONE ANOTHER?
I have a double helix on my tank and it's great. Best one IMO. Very simple design. All you do it attach a water pump to it and plug it in. It's even better if you attach it to a canister filter on the out take.
