DO NOT PURCHASE FOR SPA OR HOT TUBS--THIS ITEM WILL NOT WORK--ONLY WORKS WITH ABOVE GROUND SWIMMING POOLS This is for Swimming Pools only NOT SPA's Compatible with all above ground pools by Bestway, Coleman and Intex. Easy to use DO NOT PURCHASE FOR SPA OR HOT TUBS--THIS ITEM WILL NOT WORK--ONLY WORKS WITH ABOVE GROUND SWIMMING POOLS. With the AGP ChemConnect Dispenser, chemical maintenance of your water is a breeze. You can attach this dispenser to the wall of your pool and load it with the right chemicals, even adjusting the flow of release so you get the exact right concentration to keep your pool water clean and healthy. All you need to do is remove the strainer from and attach the ChemConnect. Compatible with all above ground pools by Bestway, Coleman and Intex.