It really is not that bad, 10 min in am, 10 min in PM. If you are not using a solar cover could dose in Pm and overdose a few PPMs after using so you do not have to dose in am, you will probably be around a quart a day, depending on concentration. As I said as you get to know the pool and what it uses in different conditions you test less as your predictions get pretty close to test. Here are a few threads on DIY chlorinators; Mas985; Smartjack's . Hope it helps. but manual doseing isn't that bad till you are sure what you want to do. I have also read of Stenner pump on ebay $200, still have to plumb and get a reservoir , search for Stenner pump. installation