Ya after a couple weeks, the sump starts to look pretty dank. I find the light over the sump/refugium makes it SO much worse.

Okay...I feel much better now.

Nice. This might be what I'm looking for.

http://www.bulkreefsupply.com/Protei...duct_info.html

For the recirculating models, what does this mean: "Allows the user to input the exact amount of water desired to be skimmed. "?

I assume this is just another way of saying that I can hook up any sized pump for its intake.

I had a model up from the one you are looking at Samw, and I loved it. I then upgraded again to a 250, which I'm using right now, and also like it. They do a decent job, and don't tend to have any issues that I've experienced.