Why calcium carbonate in the hot tub?
November 28, 2008 5:09 PM Subscribe
Why add calcium carbonate to the hot tub?
posted by skybolt to Home & Garden (3 answers total) 1 user marked this as a favorite
I just had my hot tub water tested, and in addition to the usual pH adjustments, buffering capacity increases, etc., I was instructed to add calcium carbonate to the hot tub. When I asked why, the answer was to increase the amount of calcium in the water. (*sigh*)
Google searches only tell me how bad it is to have extra calcium carbonate build up on the pump, water lines, heater and whatnot, so my question remains: why am I adding calcium carbonate to the hot tub?