I recently purchased a ASM G3 for a client.....its skimming a 220 gal semi-reef/severl fish display and does a great job. I'll install another ASM on a clients tank tonight...a G1 for a 90 gal reef. I use a EuroReef CS6-2 on my 100 and its a great skimmer. But...the ASM's work just as well as the EuroReef line and they cost a lot less. Same design and operation......slightly less quality material....but just as effective in my opinion. You could locate a ASMG3 for just under $300 easily.