I have a Warner Marine K2 cone Skimmer...they're no longer making skimmers I believe. It's rated for 300g tank, I've had it running for 14 mos, it's awesome. Mojo on here just sold his for around $350 ($720 new). I might be selling mine in the near future... I wouldn't mind a smaller cone, this ATI might be the perfect one... Might keep an eye out for a used WM K2 in the for sale thread...you'd be very pleased with it...