Thanks, Ben. Good to know. Just saved me a trip to town. I have started floating my tablets and am stocked up on Borax so I'm good for now. Will add some Borax along with the tablets, circulate the water today and do a test in the morning to see where we are. (I have a few water bugs in there that I'm hoping will leave town when I get more chlorination in there....or will I have to do something else to get rid of them? Don't know where they come from but need them out before I get in!)