Welcome to our forum.
I used 4 of the cartridges and although they work ok, I now have 4 empty cartridges I am looking to fill with slow dissolving chlorine granules. I just need to find a product to buy in bulk. Or I guess I could buy a new floating system that allows for tablets or puck form of chlorine, but those I have heard cause issues in a hot tub.I will say since stopping @ease use, my hot tub is actually clearer. I use nonchlorinated oxidizing shock, and really only need a solution that is inexpensive for maintaining low level chlorine, and buying bulk slow dissolving granuals was the rout i was going.I have all my chemicals in bulk except for maintaining adequate chlorine levels. Any recommendations would be appreciated.