Low Calcium Hardness - How to increase ?????

[AnnaK]

Low CH can cause damage by leaching calcium out of plaster, concrete, tile, stone, and so forth. You increase CH by adding calcium chloride, sold as deicer at hardware stores, or with calcium hardness increaser sold by the pool store.

[Watermom]

Or, you can use cal-hypo as your source of chlorine for awhile as it will also add calcium at the same time.

[sae99]

Awesome. Thanks so much.

[Watermom]

You are welcome.

[AnnaK]

Thanks for the reminder.