what brand and size pump did this come from? it looks like an eheim pump. maybe a 1260? if so you might want to rethink this. a 1260 pump will cost you(marine depot) $119.00 plus shipping. where as an ocean runner pump(3700 with the needle wheel) would cost (preimum aquatics)$89.99 plus shipping. these OR pumps are great pumps. they are quiet, cool running, very efficent pumps. and the make awesome rec skimmer pumps. its a good design but i think you would be better off using that pump to feed the skimmer. if you installed a small venturie into that pump and did that to the impellor to feed the skimmer. then put an OR 3700 on to recirculate in the skimmer it might be something to look into.