Buying calcium -- this is ridiculous

[waterbear]

Most of the cal hypo out there these days is 48% since it's classified as a class II oxidizer and not a class III oxidizer so it's safer to ship and store. A one pound bag will raise the calcium in 10k gal. about 3 ppm. This will be a very slow way to add calcium. Evan if you can find the 68-72% stuff it's only going to raise the calcium in 10k gal. by about 6 ppm per bag.

[kearpaul]

Thanks waterbear, waste, aylad, and CarlD, for your thoughts. I especially like waste's suggestion about getting a kicker agent from a ready-mix company. We have about a zillion such outfits here. If they can't help, I'll hit the pool store for a 50 lb. bag of Dow or Tetra.

Let's call switching to Cal-Hypo 'Plan B'.


Cheers from the Sierra Foothills,
Paul

_ _ _ _ _
Of all God's creatures, there is only one that cannot be made the slave of the lash. That one is the cat. If man could be crossed with a cat it would improve man, but it would deteriorate the cat.

Mark Twain

[CarlD]

Cal-hypo is actually very easy--you can't easily over-calcify your water if you check the CH level every week. It will go up slowly and steadily. There's nothing WRONG with Cal-Hypo. I don't like it because I use bleach and don't need calcium to rise in my vinyl pool.

[utahpool]

I have found Peladow in pellets is this safe to use in my gunite pool, need to raise my calcium about a 100 ppm. What is the safest add best way to add this? I found this at a tire store, they put it in tractor tires!

Thanks

[waste]

Sorry, I can't help

You want waterbear or chem_geek for this (or possibly Ben and others)

I just wanted you to know that folks are reading this and waiting for the ones who know to answer

[waterbear]

It probably is with the disclaimer that, as of 2006, Dow was using a different (read less expensive) purification process and no longer recommend their products for pools because of the higher bromine concentration. They also sold off their calcium chloride division and its brands in 2009 to Oxy. However, the amount of bromine added is small (smaller than if you had added a sodium bromide based algaecide) and is quickly destroyed by sunlight and shocking.
http://www.oxy.com/Our_Businesses/ch...plications.pdf
Tetra calcium chloride products, on the other hand, are still recommended for pool use (and is what I have seen and purchased in 50 lb bags the past few years).
http://www.tetrachemicals.com/Produc...ETRA_Flake.aqf

[utahpool]

Thanks Waste!

Waterbear do you buy it from a national chain or a local place? I'm having a hard time finding it locally in Southern Utah!!