I have been trying to read up on the best way to start a new saltwater tank up. I have the all of the equipment (tank, filter, etc...) What I am wondering is I have read about different filtration sysetms for the house which make for good water (gets all of the negatives out of the water) for a saltwater tank. 1st I am wondering if anyone can recommend a good system to purify my water. And second does a brita do the same thing for me? And last I will be filling a 75 gallon tank from the start is it ok to use a NEW garbage can to accomplish this?