What to do when I have added Muriatic acid and chlorine to my pool at the same time and is bubbling?

If you've added muriatic acid and chlorine to your pool simultaneously and it's bubbling, it's important to stop adding any more chemicals immediately. The bubbling indicates a chemical reaction that can release harmful gases. Allow the pool to circulate and wait for the bubbling to subside before testing the water chemistry. Once stabilized, adjust the pH and chlorine levels as needed, and consider consulting a pool professional if you have concerns.