Req for comment on high calcium numbers

[aylad]

Your shocking with cal-hypo definitely contributed to the hardness.

Janet

[StoshJ]

My pool is running 600 as well. It's a new IG plaster, and from what I read, the calcium added to the plaster contributed to the rise. Our tap water is at 200. It's been running this high for the last 6 months. I've checked the salt cell and no visible build up. However, the spa spillover (12") literally has pea sized calcium deposits on the tile at the bottom. Just this weekend I made a 5-1 mixture of water/Muriatic Acid and it worked like a charm. Just sprayed.. Sizzled, spray, sizzle.. took about 15 minutes.. No scrubbing. I do plan to drain and refill at the end of summer though. Haven't noticed any buildup/roughness on the plaster yet and I do actively check each time I'm in the pool. I keep my Ph around 7.5 and Alk 90-100.. No cloudy water...

[karrde97]

I talked with someone last about his IG which high Calcium awhile ago. He bought an old water softener and hooked it up to his system. After a few days, his Calcium was lower. Anyone else done this?

[SoCalBoo]

karred97 - i thought about something similar. the problem I kept coming up with my hypotheticla plan was that every water softener I've seen discharges in the neighborhood of 2 gallons of brine waste for every one gallon returned (softened...i.e, calcium reduced). So you are gonna have to pour off most of he pool water anyways, just to get softened water back into the pool. Why not just drain off and refill. Seems a whole lot easier. Then again, maybe I am missing something.

[docwalker]

After 50% water drain & refill: FC: 7, CC: 0, pH: 7.2, Alk: 70, Cal: 340, CYA: ~20.

I held the FC at 13.5 for approx. 24 hrs. Now I'm letting it drop down to the best guess range. Also, I've stopped using the remains of my cal-hypo shock powder so I don't drive my calcium up again.

Thanks for the tips/replies.