i think you need a pressure rated pump i think the reeflo snapper is what you need. we also need to know how big the tank is? iwaki i think are pressure rated pumps also
I'm very partial to the ATB Flowstar 1500 - ample flow and extremely quiet. I had ran ehiem 1260's for 13 years prior to switching to the ATB this year and I regret not tyring this pump sooner!