Alright thanks guys... i dont have the time for changing it once a week(personal reasons/sports..3 soccer teams if that gives you an idea) so im thinking just a turf scrubber rated for 150g(i think) and the magnum 350. and ill try to talk mom into a skimmer or if i cant then ill save up for one. Would that work because the scrubber would get the nitrates and nitrites also i think. But the scrubber and skimmer would be about $800 alone... :/