I would like to reduce my dependence pool store purchases as much as possible. Do I need to buy Calcium Hardness Increaser and Calcium Hardness Increaser at a pool store, or can I but them, or substitutes someplace else?
The 6000-8500 ppm Bromide is equivalent to 3000-4250 ppm Bromine and if you added enough for 300 ppm CH this is a dilution of 300 to one million so would result in 0.9-1.3 ppm Bromine in the pool (after the chlorine oxidized the bromide to bromine). That's not very high, but I don't know how long it would take to get rid of.JasonLion said:DowFlake is fine for pools. The only issue is a small amount of bromine, but the quantities are quite small and it will "burn off" fairly quickly. The main difference between DowFlake and PellaDow is the amount of water, PellaDow has less. The other impurities are similar.
Tetra does list pool and spa as one of the uses for it's flake and pellet forms of calcium chloride and, for that matter, it is the brand we sell in 50 lb bags that we get from our product distributors.chem geek said:Jason,
I thought about the deicers, but are they pure enough for use? I would think the requirements for purity are rather low given their usage. The MSDS for DowFlake is here so looks like just some other chloride salts as impurities while Tetra has an MSDS here where the impurities also include other chlorides and calcium carbonate. It's probably OK to use. It's only 37 cents per pound here which when adjusted for purity is still about 50 cents per pound. These companies also sell higher purity versions as well. Dow Peladow shown here is more pure and varies in price but seems quite inexpensive at 38 cents per pound here. I've updated my list in my previous post accordingly.
Richard
BINGO!waterbear said:Tetra does list pool and spa as one of the uses for it's flake and pellet forms of calcium chloride and, for that matter, it is the brand we sell in 50 lb bags that we get from our product distributors.chem geek said:Jason,
I thought about the deicers, but are they pure enough for use? I would think the requirements for purity are rather low given their usage. The MSDS for DowFlake is here so looks like just some other chloride salts as impurities while Tetra has an MSDS here where the impurities also include other chlorides and calcium carbonate. It's probably OK to use. It's only 37 cents per pound here which when adjusted for purity is still about 50 cents per pound. These companies also sell higher purity versions as well. Dow Peladow shown here is more pure and varies in price but seems quite inexpensive at 38 cents per pound here. I've updated my list in my previous post accordingly.
Richard
Yes it does.kabbak said:Does this seem like a good candidate for increasing CH?
tiam said:Hi Kabbak,
would you let us know what did you use for CH, where did you order it from, and what was the results?
thanks,
Tiam
I order a single bag on the phone from local Fastenal and they have it for me in ~ one week.tiam said:Thanks a lot kabbak and applgrl. I contacted Fastenal local store but they told me they don't have it in stock and I have to order to high quanity so they would be able to order it from Fastenal...
applgrl said:One note of caution: the heat of reaction when added to water is quite intense---don't mix it in a 5 gallon bucket or you might melt it. I have a gunite pool, so I just spread it around the perimeter, but if you have a vinyl liner or fibreglass you may want to experiment so that you don't melt holes into your pool.