Calcium Hardness in Fiberglass Pool

[baundy]

It's my understanding that CH isn't as big of a thing to monitor in fiberglass pools. Both my installer and a company I had test my water at the beginning on a spectrometer. Is that correct?

It tested today at 150ppm and Pool Math says the "ideal range" is 350-550. I haven't done anything for CH since my install in April.

Thanks!

 

[ajw22]

Calcium Hardness - Further Reading

www.troublefreepool.com

PoolMath knows nothing about your pool, if it has waterline time, or its age, so it gives you the most conservative recommendation.

Is Calcium Level Important for Fiberglass Pools?​

Calcium helps fiberglass pools resist staining and cobalt spotting. Over time, water with low calcium levels will tend to dissolve calcium out of fiberglass surfaces to some extent.

Modern fiberglass pools do not need calcium. If you have waterline tile with grout or a gas heater you will need calcium in your fiberglass pool.