Thanks Trevor. I really didn't have an idea as to the cost of purified water. 30-40 cents per gallon doesn't sound too bad I guess. But I did read of some people who needed 2-3gallons per day. With outdoor cp's (pretty much where mine will be) I'd guess you need more water. Now I don't know how many square feet of planting these people had. One person was in Georgia with 90-100 deg temps in the summer... I guess I might eventually like to have 10-20sq ft of cp's?
I'm basically a lazy person. One appeal of water gardening (with a pond) is that you don't have to worry about watering the plants. I thought I could just have my cp's sitting on a pond shelf and I could relax. Too bad for me, it seems that a real bog garden is going to require more attention. Like going out and watering pretty much every day in the summer.