Calcium Source and others...

[Mm_putnam]

I need to add around 85 lbs. of Calcium Chloride to my pool (need to raise the Calcium Hardness). Last year I filled from empty (40k gallons) and used a product I got from Fastenal to raise CH.
I just now picked up a bag of Road Runner Ice Melt which is from Scotwood Industries. However it doesn't indicate the percentage of Calcium Chloride - the spec sheet online shows "Proprietary" for the percentage.
Anyone know the percentage of Road Runner Ice Melt? Also, anyone heard of any negatives of using this? As it's not 100% Calcium Chloride - I want to be careful of what else in the bag I'm adding.

[SunnyOptimism]

I need to add around 85 lbs. of Calcium Chloride to my pool (need to raise the Calcium Hardness). Last year I filled from empty (40k gallons) and used a product I got from Fastenal to raise CH.
I just now picked up a bag of Road Runner Ice Melt which is from Scotwood Industries. However it doesn't indicate the percentage of Calcium Chloride - the spec sheet online shows "Proprietary" for the percentage.
Anyone know the percentage of Road Runner Ice Melt? Also, anyone heard of any negatives of using this? As it's not 100% Calcium Chloride - I want to be careful of what else in the bag I'm adding.

Please try not to hijack others thread. I answered this same question you posted in your other thread - http://www.poolforum.com/pf2/showthr...lcium-Chloride

If you start cross posting the same questions in multiple threads, it's only going to lead to confusion. Ben Powell and the Mods are no longer actively managing this site (they are occasionally posting but not doing much admin activity). Therefore there is no one around to clean up and combine duplicate threads. The Pool Forum will start getting very messy if folks don't take a lot of care with posting questions.

Thanks

(I'm not officially anyone important on the PF, just trying to be a good PF citizen....)

PS - My answer to your post is this - be careful with standard road surface deicing products as they can contain trace levels of metal impurities. That's not at all something you want in your pool.

[Mm_putnam]

Thanks for the prompt reply. I did see the reply on my other post as well - sorry for the hijacking. I was thinking someone who had found this thread may benefit as well but then wondered if an older one like this would be viewed. Sorry for double post.
Would it be best to delete my post here - if I can even do that?

[SunnyOptimism]

Thanks for the prompt reply. I did see the reply on my other post as well - sorry for the hijacking. I was thinking someone who had found this thread may benefit as well but then wondered if an older one like this would be viewed. Sorry for double post.
Would it be best to delete my post here - if I can even do that?

I wouldn't delete anything (not even sure how to do that). Just leave it as-is.

[SunnyOptimism]

Just to comment on Calcium deicer blends, the sodium and potassium chloride will do nothing for your CH and the magnesium chloride would be bad for your pool surfaces (Mg can scale out and discolor plaster) and bad for SWCG pools. If you have to raise your CH a lot, then you need to know exactly how much of those other components you are adding to your water.

[chem geek]

It would take a heck of a lot of magnesium to scale out. Typical hard water has both calcium and magnesium, but the solubility of magnesium carbonate is far higher than that of calcium carbonate. As for SWCG pools, the main issue is with splash-out of magnesium sulfate that has a high re-crystallization pressure so can do the most damage to unsealed soft stone or concrete. Even so, if the magnesium were a minor component of the ice salt, I wouldn't worry about it.