My first skimmer on my 55 is a Coralife with a venturi. Recently I bought an Aqua C Remora hangon with a 1200 maxijet for my 27 hex. Probably more than it needs but I empty the collection cup every day and the other skimmer on my 55 maybe every 10 days. Is the Remora that much more efficient? My bio load of fish is greater in the Remora equipped tank but both tanks show 0 nitrates. 55 has been running for 6 months the 27 gal about 3 and without a skimmer until this past 2 weeks but it has an over proportioate share of live rock, about 40 lbs compared to about 60 in the 55. Both tanks have an abundance of thriving macro algae but the 55 has a lighted sump. I really did not beleive it when I tested the nitrates in the 27 with a pair of maroon clowns, two yellow tangs, a blue damsel and some star coral. If the Remora is that much more efficient then my 110 and 300 will get one of those when they are set up.