my FC level is just SO HIGH

flyweed

Bronze Supporter
Aug 3, 2009
524
SW Wisconsin
Ok....I have my compuchlor SWG set to the "normal" setting, and it seems it keeps bumping my FC levels too high.

My current chems are:

Temp: 87 F
FC: 15
CC: 0
TA: 90
pH: 7.6
CYA: 70

I know with the SWG we should keep the FC around 3-5ppm....but I can't get mine that low it seems. I did turn my SWG way down to "low production" and got my FC down to about 7ppm..so at that point, I move the control knob back up to "normal production" and today I tested, and low and behold my level was back UP to 15ppm.

Why is it doing this? I have been keeping my solar cover off, sun hits my water, and we have a fairly heavy daily bather load (we have 6 kids), all swimming and splashing.

So I would think my Chlorine loss would be fairly substantial..but is my SWG just too good at keeping up with the demand, or am I doing something wrong?

Thanks for any help or insight

Dan
 

JasonLion

TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
37,880
Silver Spring, MD
As Bama said, if turning the knob down as Low as it goes still produces enough chlorine, then leave the knob set to low and try reducing the number of hours that the unit runs.
 

flyweed

Bronze Supporter
Aug 3, 2009
524
SW Wisconsin
Ok...I'll turn it down again. I guess I just figured that the "Normal" setting on the dial would simply MAINTAIN my current level and not raise it way up to SHOCK level. SHEESH!! Not that that's a bad problem...but it's just taking a little adjustment to get this set right.

I run the pump, filter and SWG 24/7

So I'll turn it down to "low production" and see what happens.

Dan

PS---here is a photo of the unit I have, just in case anyone wanted to see it.
 

Bama Rambler

Mod Squad
TFP Expert
LifeTime Supporter
Jun 22, 2009
22,962
SouthWest Alabama
Running it 24 hours a day, I'm not surprised that it way overshoots your required FC. Turn it on low and cut the time in half and you'll be just about right! :)
 

JasonLion

TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
37,880
Silver Spring, MD
The "Low" to "Normal" knob is essentially the same thing as the percentage setting available on other units, except that it can't be turned down to zero the way most other brands can. The word "Normal" is kind of misleading, since there is no real "Normal" setting. It all depends on your specific pool.
 

rastoma

Well-known member
May 17, 2009
249
Jasper, TN
flyweed said:
Ok...I'll turn it down again. I guess I just figured that the "Normal" setting on the dial would simply MAINTAIN my current level and not raise it way up to SHOCK level. SHEESH!! Not that that's a bad problem...but it's just taking a little adjustment to get this set right.

I run the pump, filter and SWG 24/7
Typically, SWG's are not run 24/7. That means at night when there should be less than 1ppm loss you're adding more chlorine than is being used.
 

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