NO. Combo products are risky especially when you don't know the ingredients. Just go and buy some stabilizer separately. You'll need about 3 lbs. You may be able to find it at Walmart, Lowe's or Home Depot. It may be called stabilizer or conditioner. Check the label ingredients. If it says cyanuric acid or isocyanuric acid, it is the right stuff. If you don't find it any of those places, you may have to ........... go back to the pool store!! If you do, do NOT let them sell you anything else!

To add the CYA, while the pump is running, slowly pour the CYA granules into the skimmer so it won't clog the pipes. Then, make sure you run your pump 24/7 for about 4 to 5 days to give it time to totally dissolve in the filter. Also, don't backwash the filter for that time period or else you'll just be throwing the CYA out. That amount should give you about 40ppm of CYA which would be a good level.

For the first week until the CYA dissolve, you'll need to test and add bleach a couple times per day as explained in post #11 above. A week after adding the CYA, you should be able to go to testing the cl and adding bleach in the evenings only. With a CYA level of 40, you'll want to keep your chlorine level between 3-6 ALL the time or else you risk an algae bloom. (See the Best Guess Chlorine Chart in my signature below for more about the connection between CYA and chlorine levels.)

Are you feeling overwhelmed with all this or do you feel confident that you understand? It is really pretty easy. The first week is the hardest because you have to test and add bleach so often. After that, all it takes is about 5 minutes per evening to test and add bleach. You'll want to test chlorine daily, pH once or twice per week. Those are the critical things.