Best times to run two cycles on the SWG

[smallpooldad]

From reading this forum it seems it is better to run the SWG twice rather than once each day.

At present the cycle is set to run 4 1/2 hours from 11 am to 3:30 pm giving a 1 1/2 turn on a 10,000 gal pool.

What split times would be better, for example only 10:30 am to 1:00 pm and then 2:30 pm to 4:30 pm? I normally swim after 5:30 pm.

Solar Noon on 9/8/2008 is at 12:27:55 pm.

If so should I set the reverse at 4 hours or 2 hours?

Any help would be appreciated.

 

[Strannik]

morning and afternoon
you should only change reversal when your cell scales too much
normally SWGs remember how long they've worked in one direction, so when you renable the unit it just continues working.

 

[waste]

With split run times, I like to have part in the day to refresh the chlorine and part at night so the chlorine can really do it's job without UV and bather interference 8) I'd set the run times for each to equal 1 turnover.

Aloha

 

[smallpooldad]

Thank you both for your replies.

Decisions, decisions, they both sound like a good idea. The two turns would work out marginally more expensive from a cost point of view, but I see where you are coming from and it does sound good.

I will test both and see which provides the best result.

This week I will test the twice a day and next week the day and night and will report back.

Aloha.

 

[Strannik]

when i said "afternoon" i didn't mean it literally
it can be evening, or night
i would run them with 12h difference, so if you have it running 6-10am, opposite cycle would be 6-10pm

 

[Guest]

I have a heat pump on my pool and like to swim in the evenings so I run the pump for 5 hours during the day to generate chlorine during the highest demand because of sunlight and 3 hours when I am most likely to swim so the water stays warm (I like my pool around 88 degrees). I adjust my SWG to maintian a 4 ppm FC.

 

[smallpooldad]

Once again thank you all for these many replies.

I think I have settled on 11:30 am to 4:30 pm, this seems to get the optimum FC reading, 4.2 DPD-FAS, to where I want it and even on sunny days, the ORP reading usually after 2:45 pm is higher than the set at 700, so the unit no longer has to produce chlorine which helps keep the pH at around 7.5 to 7.55. The pool if covered will normally be around 84 F, at least until December.

But I agree with Waterbear, if I swim late (after 8 pm) the unit is turned back on to heat the water a little. This longer run time also seems to help raise the ORP both that night and in the morning, presumeably more filtration helps.

Aloha.