Re: Calcium for metal
ChemGeek, thanks for the leason... most facinating!
( how come i can totally get all this stuff that you post & I can't figure the darn test kits?...lol)
As for Spa / Hot Tubs
yes, you bet calcium is added... usually the companys bottle it up under a "different name" ( & charge at least 4 times as much for it)
Beachcomber ( one of the tub brands that we have) have been selling us " Protect"... there is no content label on this stuff. I only found out that it was calcium this year, which means that I have been paying $13 a tiny bottle for quite some time for calcium
The BBB method works just fine for hot tubs, just substitude bromine for Bleach...lol
Oh & BTW, I find maintaining hot tubs is actually easier than pools... ( I dunno why)...lol
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