Assuming borate level of 0 (I have test strips on the way) and 44,000 gallons, I'm working on my calculations for adding borates.
Last full test follows.
FC 4
pH 7.5
TA 80
CH 340
CYA 40
Temp 76
CSI -.06
So is 80 too high a TA? Poolcalculator.com shows a range of 70-90. I'd like to know more about this! I see I'll need to create some sort of fountain, this is going to be difficult on my pool since they didn't install fittings on the returns back 50 years ago. I truly have no way to attach anything to send water above the surface without making some sort of friction type attachment such as a smaller size of PVC than the copper return, wrapped with some sort of rubber that will fit the fountain by a pressure seal.
I'm considering adding the boric acid due to the volume we are talking. It should end up being a whole lot easier than messing with a bunch of muratic acid (albeit only 5 or 6 gallons) and 30-35 boxes of 20 Mule Team. Not sure where to get it, I don't see it at Leslie's, and have a request in at Poolplaza.com (they are very close to my home). Even with boric acid, we are looking at 14 gallons of liquid or 100 lbs of powder (if it exists). Of course that's to bring it up to 50, and I'll be shooting for 30 at first so I'll have some extra for a while.
Last full test follows.
FC 4
pH 7.5
TA 80
CH 340
CYA 40
Temp 76
CSI -.06
chem geek said:As your water temperature rises, your saturation index will rise if you maintain the same pH level. So you might consider lowering the TA level some more.
Also, with respect to adding borates, note that you can use 20 Mule Team Borax and Muriatic Acid, but can also get boric acid directly though that's somewhat more expensive (though more convenient). If you are going to lower your TA level, you should probably do that before adding the borates since it takes less acid to get the pH lower for the procedure that involves acid addition and aeration.
So is 80 too high a TA? Poolcalculator.com shows a range of 70-90. I'd like to know more about this! I see I'll need to create some sort of fountain, this is going to be difficult on my pool since they didn't install fittings on the returns back 50 years ago. I truly have no way to attach anything to send water above the surface without making some sort of friction type attachment such as a smaller size of PVC than the copper return, wrapped with some sort of rubber that will fit the fountain by a pressure seal.
I'm considering adding the boric acid due to the volume we are talking. It should end up being a whole lot easier than messing with a bunch of muratic acid (albeit only 5 or 6 gallons) and 30-35 boxes of 20 Mule Team. Not sure where to get it, I don't see it at Leslie's, and have a request in at Poolplaza.com (they are very close to my home). Even with boric acid, we are looking at 14 gallons of liquid or 100 lbs of powder (if it exists). Of course that's to bring it up to 50, and I'll be shooting for 30 at first so I'll have some extra for a while.