You can't get dichlor in tabs, but you can get trichlor in tabs--you just have to make sure they don't contain copper. A lot of them do, but not all--just read the ingredient labels. I would not put the tabs in the skimmer, unless you have a metal problem. Instead, get a floater. That way you can adjust the flow of the chlorine, and you don't have acidic tabs sitting in your skimmer all night, ready to bathe your pump in a blast of very acidic, very high chlorine water in the morning when the pump comes on.

You need to make sure that it doesn't float over and sit right next to your liner, because that same pocket of concentrated trichlor water may be hovering right around the floater when the pump isn't on, so you might want to either keep a good eye on it or tether it from two sides of the pool to keep it in the middle. Don't let the kids play with it for the same reason.

But--it IS an efficient way to keep a steady stream of chlorine in the pool while slowly raising CYA.

Janet