just put up new pool

[dubbedout]

Check out Ben's Best Guess Chlorine chart, this will give you an idea about why you need CYA and where you should have it. The easiest way to add it would be to make a trip to the pool store and buy some, normally pool stores call it stabilizer. I bought some when I refilled mine and it was around $36 a gallon if I remember correctly. That was the liquid version, though and that's all I've ever used.

Be sure to stick with either bleach or liquid chlorine, as using any stabilized chlorine will just raise your CYA levels and require you to keep your CL higher to be effective.

[Gibby]

went to the pool store and look for stabilizer, ask them if they have any in liquid version, but no. just had stabilizer balancer, and it say i need 300g for 10000L i think i have about 25000L in by pool should i start with about 600g and see what the test CYA levels r tomorrow. the guy at the store say put the stabilizer in to a sock into the skimmer, is this how i do it? or do i have to get the liquid version? thx for your help

[dubbedout]

Both will work, it'll just take longer to dissolve. Like I said I've only used the liquid but I've read on here that's definitely how to use the powdered form. I would really suggest picking up a Taylor test kit, either the K2006 or K2006-C. I got mine from Amazon thru one of the mods links but I don't see the K2006 on Amazon right now, only the K2006-C. Here's the link to the K2006-C. This kit will allow you to test higher CL levels and also test your CYA levels.

[Charlie_R]

If you are using the dry CYA, you will need to wait a week after putting it in for it to show up on your test. Best that you put 75% of what you think you need, then a week later test, then adjust.

Once you have the sock in the skimmer, chlorinate as if you are already at your target CYA level.

FAS-DPD test kit (such as the K-2006) is a must for this method of pool care.

[Gibby]

hi all ok after 1 week with dry stabilizer here my test with my hth 6-way tester (the K-2006 is on order)

CH 2-4
AL 330
PH 7.8
HA 200
CY 30 (going to add more stabilizer tonight)

what should i do now thx for all your guys hlep

[dubbedout]

If your Alkalinity is 330 you wanna get that down, A LOT. You want it to be around 80-120. When are you expecting the K2006? If you're using strips to get your readings I'd wait till you get the K2006 and retest everything as the Taylor kit is much more accurate than strips. But if it is indeed that high you'll want to get some muriatic acid to lower it, this will take some time though because the acid will also lower you pH. So you'll have to add acid, aerate to raise pH, add more acid, etc. Until both your pH and TA are in range.

[Bosch232]

If your Alkalinity is 330 you wanna get that down, A LOT. you'll want to get some muriatic acid to lower it, this will take some time though because the acid will also lower you pH. So you'll have to add acid, aerate to raise pH, add more acid, etc. Until both your pH and TA are in range.

This is exactly what I had to do. My total alkalinity out of the garden hose is about 300. It took me 8 days and about 5 gallons of muriatic acid, but I got it to 100, and now all is good.