Go to WalMart, buy the $15 hth 5-way test kit, and run a complete set of tests on your water. Come back here and post your results for TC, pH, TA, and CYA. From there, I promise we can get you headed in the right direction!

Oh,..the stabilizer you're looking for at WalMart is labelled 'balancer" or "conditioner" for spas........but look at the ingredient list, and you should see cyanuric acid (or isocyanuric acid) as the active ingredient. That's the stuff..

Janet