mine was a 30, but it is rated for up to 75 gal
. It was kinda big on my tank.
I got mine off eBay as factory seconds. I looked a couple months ago and couldn't find them there. I looked for pretien skimmer and saw it. Not sure what CPR sells them for thru online dealers either. I paid, umm, I think it was around $110. Shipping to Canada was big, but for USA it was included (b@$tard$).