I have a pro clear aquatics mps250. I got it used without a pump. Does anyone have any experience with these? I'm on a budget(aren't we all). I had a mj1200 on it and it was ok, but it seems like I should be getting more skimmate. I was thinking about an sca302. I guess my question is whether to try and retrofit a different pump on the mps250 or get the sca302. They both seem to be in the same price range. Oh, its on a 125 with a 40b sump. Total water vol. Maybe 140g. Not heavily stocked now, but it will be, and I'm having a phosphate issue right now.