Hi I got a 15k salt water indoor pool at my work that turn green over my days off. The t cell has just been replace and I dumped half of the water yesterday to get the salt in range for the t cell to work. I put four 12oz scoops of shock in the pool and ran super chlorinat over 20 hours now and I still don't have any free chlorine. But the total is like a ten. Do need keep adding more shock till I get some free chlorine showing? Thanks
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