Swg in winter

[Rogue959]

is it safe to say that during winter (CURRENTLY IN AUS) with a SWG following the CYA chart that if not running the SWG for weeks due to next to no FC loss that you should run higher FC according to the chart for non-swg pools because you are not running (shocking ) water through the cell?

eg

running wihout swg with CYA 70 TARGET 8-20 FC
running swg with CYA 70 target 5 FC

 

[jblizzle]

It would not hurt. Think of the minimum listed for the SWG to be that lowest you should ever let the FC get. As long as you stay above it, you should be fine. The non SWG minimum and recommended levels have buffer built in due to the human unreliability factor

 

[Costas > DownUnder]

if not running the SWG for weeks due to next to no FC loss that you should run higher FC according to the chart for non-swg pools because you are not running (shocking ) water through the cell?

Just be mindful that we still cop the odd one or two days full of sunshine in the middle of winter...

I have wound back my SWCG to minimum and also had to lower the run time to 4 hrs total for the day to prevent over chlorination.

Currently holding my FC at 6ppm (CYA is around 70/80 - so using 80 as my setpoint).

 

[Propbndr]

It depends on the pool water temperature. Most swg’s will not generate at temps below 10 C. It is sun light and other organic debris that eats up chlorine. Even at that 10 C, algae can grow at a very slow rate. Just keep your FC levels above the minimum spec and you should be good.