I have a SWG which is programmed to run all night (at 80% for 9 hours) and it produces chlorine that raises the FC by 3 overnight. On most normal days my FC loss is 2 but on real sunny and hot days FC loss is closer to 3. I been measuring my FC daily and in the morning it reads 9 to 10 and in the evening 7 to 8. Pool is clear and all other readings are balanced but i am having to add about a cup of MA daily to keep PH at 7.2. Should I by running the SWG differently (ie less time or higher %) or is it OK?
Is this Ok balance
- Thread starter George Whitzel
- Start date
No need to keep the pH that low.
The FC level is a bit high I think, but nothing wrong with that. You likely could lower the output some and see if it stabilizes at a lower FC.
The FC level is a bit high I think, but nothing wrong with that. You likely could lower the output some and see if it stabilizes at a lower FC.
- Apr 23, 2017
- 2,400
- Pool Size
- 22000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite (T-15)
Hi George...I run my SWG and pump for 11 hours out of the day. 3 hours are on high and the rest are on low speed. SWG is set at 40% with my target FC of 6. All being said Im holding steady FC of 6-7.
Unless you are having large swim loads daily seems to me you should not have to run SWG at 80%
My pool seems to like pH up around 7.8 for some reason and that works fine for me. I can lower to 7.2 - 7.4 range and it just climbs right back up and holds 7.8 for a few days. Have you tested your fill water for pH? With this Texas heat I have to top off my pool about every 5 days and my fill water tested out at 8 for pH...
Unless you are having large swim loads daily seems to me you should not have to run SWG at 80%
My pool seems to like pH up around 7.8 for some reason and that works fine for me. I can lower to 7.2 - 7.4 range and it just climbs right back up and holds 7.8 for a few days. Have you tested your fill water for pH? With this Texas heat I have to top off my pool about every 5 days and my fill water tested out at 8 for pH...
Thanks Jason for your reply. As for FC i guess I am running a little ovekill as I recently got over a bout of algae and do not want a recurrence.
I thought running a PH of 7.2 was ideal. How high can it go before it becomes a problem?
I thought running a PH of 7.2 was ideal. How high can it go before it becomes a problem?
pH anywhere in the 7's is acceptable. You will find that pH rise will slow down as you get into the high 7's. Where is your TA?
TA is 120. I have to add fill water every other day here to keep the water level in the middle of the skimmer input. I suspect my fill water has a high PH and is part of the reason my pool water PH increases.
That TA will also drive the pH up. But, no need to try to keep it at 7.2. The lower you take it, the faster it will rise.
Although if you want to try to lower the TA (might be losing battle if the fill water has high TA), then you would just keep lowering the pH to 7.2
Although if you want to try to lower the TA (might be losing battle if the fill water has high TA), then you would just keep lowering the pH to 7.2
With a swg my understanding is you want to try and keep a csi between -0.3 to zero.
This will help help prevent scaling on the cell.
so use pool math to find your csi and then play with the numbers. I know my plaster pool likes 7.6-7.8 and stays in that range for about a week.
This will help help prevent scaling on the cell.
so use pool math to find your csi and then play with the numbers. I know my plaster pool likes 7.6-7.8 and stays in that range for about a week.
Similar threads
