Hi, well i just started a 29gal saltwater tank a week ago today, and i was wondering what types of things i need. My first question is, do i need a protein skimmer? and if so whats the best brand to get? I already have 3 powerheads in it with each on at 170gph. I was thinking of adding another one that has a slower gph for the bottom part of the tank, would that be a good idea? So far i have 2 on the top creating almost like a cyclone and 1 near the bottom blowing on my LR. My last question is about water, what i have been using is the water u can get at walmart that u get from a machine that says it has no chlorine in it, would that work?Also when i add it and it hits the water it looks kind of, dont really know how to explain this, oily?, but then it disappears. Is that just because of the salt? Well hmmm i think that pretty much covers it, sorry for so many questions.