I've actually gotten one of those skimmers too work quite well with a modded Maxi-Jet. IME the only problem with them is they love to randomly overflow which can easily be fixed with a little creative plumbing.
What are your nitrates at? If they are not sky high Gresham's option of using GFO would be a good one, you don't really need a reactor, a bag with some in an area with moderate flow helps enough. If your nitrates are high, try doing a large water change with RO/DI to knock it down a little, then add some GFO.
I fight different types of algae all of the time, my tank is way over skimmed, I do decent sized water changes every week, run GFO, and yet still a little algae pops up here and there, I have to remove it manually when I do my water changes. I guess if I were to run a more aggressive fuge I might have less algae, I dunno..