In what order should I add the chems for balancing my water

[HarryMichael]

FC/TC....6.......goal.....6
pH.........6.8....goal.....7.5
TA.........40.....goal.....120
CH.........30.....goal.....150
CYA.......65.....goal......50

*Fiberglass pool

Now that the big rain storms have stopped (pool overflowed twice) and my numbers are way off, I'd like to get everything back in check. I need some help with the order in which i should start adding the chemicals. I 'll be using Borax for pH and I shock with and mostly use bleach. I also use the 1" tabs here and there.
Any advice would be great!!! Thanks, Harry

 

[jblizzle]

If you truly want to lower the CYA, that should be your first step as you will have to replace water.
Then get the pH in range and then add some TA and then add the CH ... these 3 can be done within 30 minutes of each other.

 

[HarryMichael]

Thanks Jason..Going to start replacing water tomorrow

 

[jblizzle]

I neglected to ask, what test kit are you using? That could alter how much faith I put into those numbers.

 

[HarryMichael]

TF-100 test kit w/ speedstir chems about 11 months old. I did all of them twice because of the low ones. In the last month we have had a lot of rain.

 

[jblizzle]

How are you chlorinating? You may not want to raise the TA that high ... 80ppm is likely plenty.

 

[HarryMichael]

Chlorinating with Target 8.25 bleach most of the time but with all the rain the last few months and going out of town, have been using 1" tabs some. 80 TA sounds good to me. In a fiberglass pool, do I need to bring CH to 150?

 

[jblizzle]

Hard to say, only some of the older gel coats have calcium in them which need the calcium in water. Safest to add some CH.

 

[HarryMichael]

Thanks again!!