Spa and Hot Tub Booster Seat Pad... vs 4 Pack Spa in-Filter Mineral Sti...

The spa season where i live, in a warm climate, is at most three months or so.

Instructions give clear directions for chlorine spas but no mention of bromine. It has no effect on water. But my skin has itches and had sores ever since began using this product. It says bromine free spa.