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Thanks Patrick, I will try that before a new liner. Any ideas on the filter? Is a 75 gpm valve too much for 1 return? Have you heard of the filter shape before?

Thanks again, I've just switched to the BBB method last week. Before that I used Trichlor chlorine 3 inch tabs, Powder magic ac super oxidizer or calcium hypochlorite for my shock. I agree with Casey that a better test kit which includes a calcium test is best. I have been keeping track of my...

Thanks Brushpup, I went and took a water sample in to the nearby pool store and they did not test for calcium however here are my results. The deposits have been on the liner several years. FC 3.4ppm tc 3.6ppm cc .2ppm ph 7.5 hardness 547ppm alkalinity 80 cya 55ppm The kit is made by chemtel...

Hi all, I have deposits on the side walls of my liner. They do not come off with regular brushing, I can get them off with very aggressive scraping with my fingernail. I've had them a few years not sure what from. I believe the algae problem I have is due to these deposits being an easy spot for...