Will aeration work under a cover

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robermax

robermax

Silver Supporter
LifeTime Supporter
Jun 5, 2010
15
Dartmouth, MA
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Autopilot Digital PPC1 (RC-35)
Hi TFPoolfolk:
I am in the process of getting my TA from 150 to 80. I have been adding muriatic acid and aerating and it's been working well- I am down to 90 so far. I made an aerator from an ancient compressor and fit it to a garden soaker hose which throws out tons of bubbles, weighted down in the deep end.(Pictures available on request)

What is the opinion of the TFP experts regarding aerating with the cover closed? The cover is presently broken and stuck in the open position so it is not an issue right now but it will hopefully be fixed very soon.

Thanks for your useful knowledge.
Bob
 
If you're aerating by blowing air in, then it shouldn't matter if it's covered or not. Might be kinda neat to see the cover inflate a little :mrgreen:

Realistically, once you drive the TA down to where you want it, it's not hard to keep TA in line after that. A little acid once a week or whatever. Swimmers will aerate enough to bring the pH back up.
 
I recall reading one of ChemGeek's old posts about his own pool's cover helping to keep the pH from rising, but I'm not sure I can find the post. The theory I understood was that pH rise is the result of CO2 being out of equilibrium between the water and the air. If the surface of the water is not allowed to breathe, then the CO2 outgassing is slowed.
 
The idea of inflating the cover makes me want to try it!
I've still got about 10 points to go so will keep pushing.
Also trying to clean the pool, have not wanted to run the robot at pH 7 and with hoses on the bottome.
 
Dodger said:
I recall reading one of ChemGeek's old posts about his own pool's cover helping to keep the pH from rising, but I'm not sure I can find the post. The theory I understood was that pH rise is the result of CO2 being out of equilibrium between the water and the air. If the surface of the water is not allowed to breathe, then the CO2 outgassing is slowed.
Click to expand...

Yes if the CO2 cannot escape into the atmosphere then the amount of dissolved CO2 does not decrease. The decrease in dissolve cO2 is the rise in pH
 
tomfrh said:
Yes if the CO2 cannot escape into the atmosphere then the amount of dissolved CO2 does not decrease. The decrease in dissolve cO2 is the rise in pH
Click to expand...

Yes, I was wondering about this but the cover is not air tight.
I will post pictures next 24h or so- have a late night, early morning coming.
 
Solar bubble covers that sit right down on the water will dramatically slow outgassing and pH rise. A regular pool cover will not have such an effect on outgassing.
 
Did someone say pictures?

Here is my aerator set up
IMG_20180615_125657247_HDR.jpg

my relic air compressor
IMG_20180615_125705390.jpg

In action- you can make out tiny bubble and see my broken pool cover
IMG_20180615_125949492.jpg

I can't see if the cover inflates since it's broken. Will probably not need to aerate by the time it's fixed.
 

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