Monitor my SLAM

[propjetprop]

My pool is 1 year old now. I slacked off on maintaining the pool chems during the winter months, and due to some yard drainage issues, every time it rains I get a lot of dirt in the pool. It has been a wet winter and I have had trouble keeping up.

Well, the weather is warming up and my pool is GREEN! I started the SLAM yesterday, and here are my numbers after 14 hours.

FC 11
CC 0
CYA less than 30... I will say nil
TA 80
CH 90

I plan on adding liquid CYA to bring it up to 40 and then raise the FC to 16 according to the FC/CYA chart for SLAM
I am running the cartridge filter 24 hour a day at 3000 RPM.

24 hours after adding the first round of liquid bleach, there is no change in the green color or opacity of the water. I can not see the bottom of the pool.

 

[mknauss]

How long after adding the bleach did you test FC of 11?

 

[propjetprop]

How long after adding the bleach did you test FC of 11?

about 18 hours.

I tested before adding bleach, and FC was 0 as well as CYA was less than 20... I could still see the black dot with the container full

 

[mknauss]

OK -- so you are good at adding CYA.

FYI - the liquid CYA is many times more expensive than the granules. Up to you.

 

[mknauss]

Check your pH. Needs to be around 7.2 prior to starting SLAM.

 

[propjetprop]

PH was around 7.0 before I started.... Going to go test again now... its been about 1 hour since i added liquid CYA

 

[propjetprop]

CYA test shows 50 now after adding 128 oz of biogaurd liquid stabilizer 100. FC tested at 10.

I am going to add 2 juggs of 121 oz 6% liquid bleach now according to pool math.

 

[mknauss]

One gallon of liquid stabilizer would raise your CYA by 20 ppm. If you have 50 now, you had 30 before. Or your pool volume is off.

 

[propjetprop]

For what its worth.... the first test yesterday I was able to fill the testing tube with the mixed solution and still see the black dot. So all I know is that is was less than the lowest mark on the test tube and that is 30. I added 1 gallon of stabilizer and retested and i lost the black dot between 40 and 50 on the tube... so I rounded up to 50 for my measurement. I am sure there was some CYA in the pool, just not enough to measure on my taylor measuring tube...

 

[propjetprop]

Well.. its been a week and the water is clear now... I never measured any CC during the SLAM. I think it is just yard dirt and dust that has blown in the pool that made it cloudy. There is still quite a bit of dust when I sweep, but the water is clear. My FC is still a bit high at 11, but I will let it come down over the next week and get the SWG going again.

Thanks for all the help!

 

[Texas Splash]

Did you at least run an overnight (OCLT) test to be sure? It would be a shame to lose all your good progress.