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Some background, I have been attempting to isolate an in-ground pool leak. I have ordered an air/water pressure test kit, waiting for its arrival. I have determined with the bucket test that I have a leak and a dye test that has shown one of the skimmers is pulling dye. But, I believe I have...

Near 8.5 today. Measured CYA is coming in at 170, not sure how accurate this is given the 50/50 split of tap water. Recommendation for this is FC -> 13-20. Running with FC at 3-5, I'm getting algae growth on the walls after about 4 days, brush and vacuum. I'm increasing FC and watching for...

Ok... Got the CH to 260, added another 6 lbs of Calcium Chloride. So in all it took me 19lbs to move from 230 -> 260. I guess if the test variation is +/-10ppm then on the high side I would have been trying to move 40ppm which would have taken 18lbs. So on a stretch, I guess its within the...

Is there a relationship between CYA levels and Calcium hardness?

PoolMath gives me the same results, 4.4lbs to raise 10ppm. I've added 13 lbs and only moved 10ppm... weird. Yes, I can bypass the softener for the whole house while filling the pool. - - - Updated - - - Thanks, been using 6% bleach.

So you're saying just keep adding Calcium Chloride until I hit the numbers I like? Even though the ppm calculations aren't working out? BTW, 300 would be another 26 lbs! :rolleyes:

I'm new to the forum, but have been lurking all summer and learning a lot. I have a concern I thought I would ask the experts here, before I run myself into trouble. My calcium hardness has been dropping, started out at 250 and dropped to 230. I believe this is likely due to adding water...