SLAM - TA Rising a bit (The Woodlands, Texas)

[Dejavu21]

Guys,

I started getting the pool ready last week after being out of town a week and coming back to a green pool. I started by getting the PH down and began slamming yesterday. I added some CH to get it up as well yesterday. Below are the numbers for the last few days.

Since FC is 16 this morning I will continue to SLAM again, but was curious if I should worry about the TA, which seems to be rising and what the appropriate level should be since the goal says 90+?

PH FC CYA CH CC TA Goals 7.5 -7.8 5.0-7.0 30-50 250-300 70-90+ 7-Mar 8.2 0 90 175 0 8-Mar 7.6 0 90 175 0 110 9-Mar 7.7 6 200 0.5 120 10-Mar 7.7 4 175 0 120 11-Mar 7.6 16 250 0.5 130 ​

Also, I realize the CYA is a bit high, but I will deal with that after getting the pool stable. As for the CYA, I am going to try the very controversial Bio-Active product. I've seen some negative stuff on it, but I also know two people who used it and had great results.

 

[Texas Splash]

For a SLAM, forget everything except the initial lowering of pH (to about 7.2) then focus on an accurate CYA and maintaining the correct FC. First question - Do you plan on keeping the CYA that high? (Disregard) - you already answered that one. If so, then you need to increase FC to "35". If you decide to reduce CYA now, then don't add any chemicals until you exchange the amount of water you want to adjust the CYA a bit lower as you see fit.

Everything else (TA, etc) can wait until you pass the SLAM. Hope that helps.

 

[Dejavu21]

Thank you, much appreciated!

 

[Dejavu21]

One more question, i got the FC up too 39-40 on Sunday. When I tested after sundown last night it was 39. This morning it was 36. My question is, Since I am already above shock level do I leave as is and retest after sundown tonight and see if it has dropped more than 1ppm tomorrow morning? I am under the impression that since it dropped 3 ppm last night that their is still an algae presence.

 

[madwil]

Yep the drop means you still have it. Keep maintaining slam levels

 

[Dejavu21]

Yep the drop means you still have it. Keep maintaining slam levels

Thanks

 

[Dejavu21]

Ok, passed the OCLT test. Should I wait until the Chlorine levels are back to daily normal levels before adjusting PH, etc. since PH and TA can get outta whack during the slam?

 

[madwil]

Yes. Once fc is below 10 you can adjust and balance the rest

 

[duraleigh]

Ok, passed the OCLT test.

Is your water crystal clear? If so, you are good to go.

 

[Dejavu21]

Yes, water is very clear. Probably could use another brush/vacuum. But looks great.

 

[Dejavu21]

Actually, now that the sun is out, it's still a bit hazy, not crystal clear. I assume this is due to a high PH and other factors. Should I be concerned that not all the algae is gone even though I passed the OTLC test?

 

[madwil]

Remember oclt is only one criteria. Also clear water and no cc before algaecdefinitely gone

 

[duraleigh]

Yeah, you have not yet passed OCLT

Passing the OCLT requires three things...
A. Pool water should be crystal clear with no sign of algae anywhere
B. CC's test result should be .5 ppm or less
C. You should not lose more than 1 ppm FC overnight.

 

[Dejavu21]

UPDATE -
Ok, so yesterday the water was Crystal Clear, I see no signs of Algae and the FC did not drop more than 1ppm overnight and CC is 0, PH is 7.6.

Yesterday morning the FC was down to 22 ppm and after a bright warm sunny day yesterday, this morning's FC was still 22 ppm. Is this normal, should'n it have dropped some?