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My pool opened this week and my contractor is waiting for the water to clear before vacuuming the bottom. My big problem is that it is eating the 3" chlorine tabs and yet I have no free chlorine. I have a 38,000 gallon 16'x75' pool. All the chemical levels except the free chlorine seem OK...

​Can I run the water through the heater while Ascorbic Acid is still in the water?

I need to do an Ascorbic Acid treatment. My pool company just opened the pool for me and I told them not to add chlorine, but when I tested today the free chlorine level is 2.0. How do I reduce it to 0 so that I can do the AA treatment? It is still too cold to swim in CT so I want to do this...

Last season I used your Ascorbic Acid solution for the yellow stains in my pool after trying an ascorbic acid pill on a small area. It took out most of the stains but not all and the stains returned. I believe it was caused by my pool service crew leaving an Alyn wrench in the shallow end over...

Re: Yellow stains in vinyl pool My situation is similar to Steve32k. I have yellow stains all over the liner. My 16x75 38,000 gallon pool is surrounded by trees, oak, pine, and probably some ash and maple. I thought it was yellow algae and I used Yellow Out and shock per the instructions but...