what time of day should i be worrying about minimum FC level?

crackers8199

Well-known member
Jun 5, 2014
132
Lake Elsinore, CA
how much do i want to generate each day? the entire 3-4ppm expected loss?

the calculator tells me for an 8 hour runtime i need to bump that up to 80%, which based on discussions here seems way over what i need...so i'm guessing i don't need to aim for 3-4ppm. right?
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
33,868
Laughlin, NV
You need to generate chlorine each day to replace your FC loss. If you have less than 3-4 ppm loss right now, great. Just be sure you are generating enough chlorine each day to replace the loss. And that you NEVER go below minimum FC during the day. Erring on the high side is much better than being too low.
 

JimMarshall

Gold Supporter
TFP Guide
Jun 5, 2017
1,003
Oil City PA
how much do i want to generate each day? the entire 3-4ppm expected loss?

the calculator tells me for an 8 hour runtime i need to bump that up to 80%, which based on discussions here seems way over what i need...so i'm guessing i don't need to aim for 3-4ppm. right?
Better to err on the side of too much. You’re going to need to plan on making continuous adjustments over the next few days/weeks.
I’d set it high and adjust down from there until you find your happy place
 
  • Like
Reactions: crackers8199

crackers8199

Well-known member
Jun 5, 2014
132
Lake Elsinore, CA
well, i guess it's a good thing i bumped it to 40% for the 8pm-10pm run last night...i came out this morning and the SWG wasn't running. checked the timer and the ON trip for 6am had fallen down to sit right next to the OFF trip for noon.

i fixed the tripper and turned it on manually, but not until i saw it around 9:45...so i'm only getting 2.25 hours of runtime this morning rather than the full 6. i guess i'll have to keep an eye on it the rest of the day and add bleach if necessary. also, i really need to get a digital timer to prevent this from happening...
 

crackers8199

Well-known member
Jun 5, 2014
132
Lake Elsinore, CA
so, after bumping the cell to 40% and having the issue yesterday where it did not run all morning like it was supposed to, i just did my weekly test. did it a little early today (it's 10:30am, normally i would do this at noon when the morning SWG run is complete but we're heading out for the day so i wanted to make sure i get it done)...

DPD FC test only shows 5.0. last two weeks it has been 6.5 and then 6.0.

is it likely this is because of the lower runtime yesterday, or is it possible it's just because i'm testing 1.5 hours earlier than normal? would the next hour and a half of the generator running add another 1 to 1.5ppm (keeping in mind it's now at 40%, not 20%)?
 

crackers8199

Well-known member
Jun 5, 2014
132
Lake Elsinore, CA
well, i guess i need to figure this out now. just did my weekly DPD test, and i'm at FC 11. clearly, doubling the SWG has me generating way too much chlorine.

i was planning to add CYA today, but do i need to get the FC level back down first?