Need recommendations for skimmer rated 300gallon

From what you've told us about your available space, I think any of the skimmers below would fit.

Regal-170sss
Dim: 9.6"x8"x23.6"
rated up to 300g

Regal-200sss
Dim: 11.6"x9.6"x23.6"
Rated up to 400gal

Elite-200sss
Dim: 12.4"x10"x23.6"
Rated to 530gal

SRO-3000int
Dim: 14.5"x9.5"x24"
Rated up to 300gal.

Thank you,
Lindsey

A lot of people like to go with a skimmer that is "over rated" but it's not really a good thing to do when you're dealing with skimmers that are rated correctly like ours are because the skimmers need a certain amount of organics in the water to work properly and if you get a skimmer that's over rated, you will find that it doesn't work well and it will have that "yo-yo effect" where it seems like you can never get it dialed in because there's not enough organics in the water for it to work efficiently so it has to wait for it to build up, then it works well for a day or so, then not again. I would try and stick with a skimmer that's rated closer to your tank size.

We do not sell direct to the public so you will need to find a local store to purchase the skimmer from.

I would go with the SRO-2000int.

http://www.coralvue.com/reef-octopus-sro2000int-super-reef-protein-skimmer