I hope this link helps:
Products of AquaMarin
Ive just purchased a pre-owned NW-150 last week. Before this I have used Bubble Magus(BM) skimmer. What I can say is that the RO
is as good as the BM. And the RO
nw-150 should be able to suit your tank capacity. I am using it on my 322 tank + sump which is around 400L.
1) Fine bubbles
2) Good skimmate
3) Small size
4) Easy to clean the skim cup
1) The way you adjust the water level. It is quite troublesome shifting the telescoping tube up and down.