ok well i have well water with a lot of iron in it. and when winter comes around for some reason every time i do a water change i can see particals floating in the water and it kind of clouds up and then i go by poly pads and that works a little bit and then i put another set in after the other set and then my tank looks ok but that takes two weeks. and then by that time i need another water change. so i was wondering what happens if i go by water at the store. would that be ok or no?