I have a Vertex IN 80 and Vertex in 100 skimmers. Just a couple months use on each, I need more room in my sump so I'm getting a space saver RO . $120 for the 80 and $150 for the 100. Also have a 36" Aquatic Life 2x150w MH and 4 bulb T5 combo. I'm considering going with a second Radion over my 72 and seeing if i can sell this fixture locally.