Quick update before doing the OCLT later. Although this is a bit long.
My pool is brand new. Filled with water on April 1 and the pump started on April 3. The SWG was started about a month after that as I couldn't put salt in the pool until pebble cured. So, the SWG isn't even 3 months old yet.
I was thinking I'd try 6 -7 FC from here on out, but the chart on this site says target of 6 FC is good up to CYA of 90 with a minimum of 4 which is how I came up with my 5-6 FC range.
| CYA (Stabilizer) | Minimum FC | Target FC |
| 60* | 3 | 4 |
| 70 | 3 | 5 |
| 80 | 4 | 6 |
| 90 | 4 | 6 |
| 100* | 5 | 7 |
I was waiting for a call back from Pentair when I started this thread. They did return my call and I got a few ideas from the person I talked to but they are for sure not on the TFP plan. I mentioned I keep my FC around 6 and he exclaimed "that's way too high, it should be about half that!". So I told him I keep my CYA around 80 in which he insisted that was also too high and I should have that around 50. I just agreed and said I'd fix it so I could move on to the real issue I was calling about. I told him that I thought maybe the cell needed cleaning but when I took it out of the system it looked brand new and that I read I shouldn't clean it unless I see scale. He told me that was wrong and that even if I don't see scale I should clean it at least twice a year. He said there is a probe inside that reads the salt level and if it gets dirty it can throw the chlorine production off. I told him I don't use automation and asked if it were still true. If even when my salt cell is telling me it is 100% output if it would actually put out less chlorine. He said yes it would effect the chlorine output. Well, my SWG has less than 3 months use but I figured I'd clean it anyway. So I mixed my 4:1 ratio and poured it in the SWG. No bubbles but I let it soak about 10 minutes. We will see if anything changes with that but I'm doubtful from the testing I did that I will talk about later. I added pics of the inside of my SWG prior to cleaning at the end of this post. The gunk you can see on the flange is lube for the gasket. On a side note, I tested my water and my salt level is at 3400 but my intelechlor is saying it is 3950 with no way for me to calibrate it. I think what Pentair told me wasn't true.
Pentair rep also mentioned getting my water tested for phosphates so I will do that tonight when I go for dinner. He also mentioned to crack open the union just after the SWG and get a water sample to test for chlorine. The water sample just after the SWG should be higher in chlorine than the pool water. I am not sure why, but I ran the test several times both on the pool and just after the SWG at 100% output, and I got different readings each time. I was sure to get new water samples for each reading and rinsed my containers and test vials at least twice between each use. I use the Taylor drop test to measure chlorine. My results were:
Before cleaning SWG:
Pool FC - 3.0 and 3.0
SWG FC - 3.5 and 1.0
After cleaning the SWG:
Pool FC - 2.0 and 3.0
SWG FC - 3.0 and 3.5
I then added liquid chlorine at around 1500 (3pm) to bring my my FC. My reading was 5.0. I still have my pump running with my SWG at 100% output. I'll take another reading before I go to sleep and I'll make sure the SWG is turned off with the pump still running so I can test the FC again when I wake up.
lets keep it that way.
on the 
