Baquacil to Chlorine Conversion Procedure

[Thissenw]

I added 3 lbs Poolife Stabilizer (96% cyanuric acid) to the skimmer, following all instructions. I've heard CYA takes some time to disolve. It's been 2 days, and still reading 0 CYA. Is this normal?

[waterbear]

I added 3 lbs Poolife Stabilizer (96% cyanuric acid) to the skimmer, following all instructions. I've heard CYA takes some time to disolve. It's been 2 days, and still reading 0 CYA. Is this normal?

It sometimes takes up to a week for it to appear on testing. As long as you have not cleaned or backwashed your filter after adding it you will be OK. Just be patient. I normally wait a full week before even testing for it after adding it. Running your pump 24/7 will speed up the dissolving a bit since the undissolved CYA gets trapped n the filter and the constant water flow helps it dissolve.

[Watermom]

Did you finish your conversion? And if so, did you change your filter media before you added the CYA? Maybe post another complete set of water testing results and tell us latest cl readings at sundown and then again at sunup the next morning.

[Thissenw]

Day 9: Pool is crystal clear. Total bleach so far = 63.5 gals 6%. Pump pressure steady. FC dropped 1.5 ppm and CC unchanged overnight. FC drops to 0 by noon each day, so I added the CYA to reduce daytime usage. Slight movement in CYA yesterday. Plan to check it tomorrow. I'll change the sand in 8-10 days. It looks like the end is in sight.

Here are the overnight readings:

Thur 7:30pm
7 ppm FC
0.5 ppm CC
7.2 pH

Thur 6:30am
5.5 ppm FC
0.5 ppm CC
7.2 pH

[Thissenw]

Day 10: Pool is crystal clear. Total bleach so far = 65.5 gals 6%. Pump pressure steady. Pool has reached equilibrium: overnight FC drops 1-2 ppm, and CC is unchanged. FC drops to 0 by noon next day. Adding 2 gals 6% about 5pm, and checking levels after dark. Expect to keep this up until the CYA rises and I change the sand in 7-8 days. CYA still below detection point, but seems to be increasing. It's been 4 days since I added 3 lbs, and I'm surprised it hasn't registered yet.

Overnight readings:

Fri 8pm
7 ppm FC
0.5 ppm CC
7.2 pH

Sat 8am
5 ppm FC
0.5 ppm CC
7.2 pH

[aylad]

CYA takes a long time to dissolve even in a clean filter, but you'll be surprised when you change your sand out just how much goo the Baquacil causes--it's not surprising to me that the CYA is not dissolving and registering faster than that.

Are you sure you didn't do any backwashing after you put the CYA in?

Janet

[Thissenw]

CYA takes a long time to dissolve even in a clean filter, but you'll be surprised when you change your sand out just how much goo the Baquacil causes--it's not surprising to me that the CYA is not dissolving and registering faster than that.

Are you sure you didn't do any backwashing after you put the CYA in?

Janet

I backwashed prior to adding CYA, according to the instructions.