I’m starting to put together the equipment for my almost ready tank. It’s a 50g tank with a 20g sump. I guess a 75g capable protein skimmer would work best. The one I had in mind has sold out on eBay, so I was wondering if you guys had any recommendations for a good, efficient, in Sump protein skimmer, with a 75g capability, for under $100 USD? With everything that I need to get, I have to keep the cost as low as possible.