so it is finally time to move my sump into the basement(iam aloud to put a hole in my wall)for this i will need a pump that will give me 600gph at 15 feet this is all my over flow will take, would like more but it will have to do. the tank is 90 gallons with 1200gph in powerheads which i might get rid of and get 2 tunze streams but we will wait and see one thing at a time 2 on a side note i do water changes every 2 weeks feed fish once a day think i no what i am doing but nitrates are getting wicked high any info is something dyeing that i dont no or cant see thanks