SRO2000INT would be an excellent fit for your tank. Alternately you could contact Jon Warner of Warner Marine Research and inquire if he has any MF161 demo skimmers available. They were show models or photo shoot units, otherwise completely brand new, about $100 off, free shipping, and he was throwing in a liter of ecobak biopellets with the purchase. I have the MF201 on my 180 and it kicks butt.