Until I tried to open my pool this spring. Thank God I found this forum. I have been using dichlor granules for the past few years and noticed over time it was getting increasingly more difficult to keep the water balanced. I now know why. I've spent this week partially draining and refilling my vinyl inground pool. I am finally getting to around 100 on my CYA reading and don't know if I can afford to keep running the water much longer. Is there any other possible way to keep lowering the CYA without draining?
Thanks, this forum has opened my eyes to the truth!