Lost in my SLAM
- By Green Goblin
- Testing and Balancing Your Water
- 21 Replies
I've had a challenging pool month. My salt cell failed a few days before an 8 day trip, so I covered for that with liquid chlorine, and got the cell replaced. I returned to a pool that looked fine but was consuming a lot of chlorine and had mildly elevated CCs-- 1-2ish or so. I slammed with liquid chlorine, and it was an impressive battle-- I've been doing TFP for 10 years or more and have never seen a pool consume so much chlorine. The SLAM process has been imperfect, interrupted by storm damage, a medical procedure and a death in the family (it's been a heckuva month!). After a bit more than a week, the CCs trended up into the 5-7 range and became stubborn there, with the pool consuming about 3 gallons a day. The pool still looked great. I have had the pool cover off for the duration of the slam.
I tried to push the FC higher and added 6 gallons of 10% and the pool water seemed to get a slight yellow tint-- subtle, hard to tell with a French gray pool. About 5 years ago, I had an issue with iron staining after a high FC, so I backed off and let the FC drift back down. I felt lost at this point and decided to let the FC come down under 10 so I could get an accurate idea what my pH is and start again.
It took a few days to drift down below 10 and the pH was high, above 8, so I worked the pH back down to 7.4. The pool looks fantastic.
The CC had remained stubbornly high generally between 4.5 and 5.5. Last night it was 5, and I was wondering if I had gotten into a situation where I'd have to replace some of my water, despite looking fantastic. I rained like crazy last night, and this morning the CC is down.
Current numbers are:
pH 7.4 (tested yesterday night when FC was 9)
FC 14
CC 2.5
TA 60
CYA 50
CH 650
So, my questions are-- should I restart the SLAM process at this point? If so, what FC target-- I had been doing 24. Can I SLAM my way out of a CC over 5 with a FC of 24?
I tried to push the FC higher and added 6 gallons of 10% and the pool water seemed to get a slight yellow tint-- subtle, hard to tell with a French gray pool. About 5 years ago, I had an issue with iron staining after a high FC, so I backed off and let the FC drift back down. I felt lost at this point and decided to let the FC come down under 10 so I could get an accurate idea what my pH is and start again.
It took a few days to drift down below 10 and the pH was high, above 8, so I worked the pH back down to 7.4. The pool looks fantastic.
The CC had remained stubbornly high generally between 4.5 and 5.5. Last night it was 5, and I was wondering if I had gotten into a situation where I'd have to replace some of my water, despite looking fantastic. I rained like crazy last night, and this morning the CC is down.
Current numbers are:
pH 7.4 (tested yesterday night when FC was 9)
FC 14
CC 2.5
TA 60
CYA 50
CH 650
So, my questions are-- should I restart the SLAM process at this point? If so, what FC target-- I had been doing 24. Can I SLAM my way out of a CC over 5 with a FC of 24?