I just got a MRC MR-2. I am running a marineland 4500 on it, the pump puts out 1100 gph max. I have plans to keep the skimmer outside the sump, because there is not enough room in it. Last night was a nightmare, I hooked the skimmer up and turned the pump on and the skimmer overfilled and sent water pouring out of the drains in the collection cup. I am not sure what I am doing wrong, so anyone please help! Thanks