White Flakes and pool balancing

[Scollops]

Hi all, have been getting my pool balanced over a number of weeks. Results:-
FC : 6
PH : 7.4
TA : 125 (little high)
CYA : 50 (will bring up shortly)
CH : 400
SWG set at 27% 2 x 5 hours, 2ppm also run pump only 1 hour after each 5 hour period.

Pool is pretty crystal clear....as i can see. Although when i run a daily robot pool cleaner, getting lots of flakes. Questions are what are these and why so much ?

 

[Texas Splash]

what are these and why so much ?

Could be calcium. Place in a pile outside on the grass and pour a little muriatic acid on it. If it fizzles it's calcium. Might be coming loose or out of solution when you lower the pH. Do you typically see any scale on the SWG?

 

[Scollops]

Could be calcium. Place in a pile outside on the grass and pour a little muriatic acid on it. If it fizzles it's calcium. Might be coming loose or out of solution when you lower the pH. Do you typically see any scale on the SWG?

Hi did the test....fizzing away so check its calcium. The SWG does have some scale noticed a few flakes there too. Given the swg is fairly low and build of scale. Thoughts on addressing the issues ? I did clean the plates not long ago.

 

[Texas Splash]

Thoughts on addressing the issues ?

For the SWG, you can check on the manufacture's instructions for removing scale. For many SWGs it requires soaking the plates in a 4-1 ration of water to muriatic acid, then monitoring until the scale dissolves. For the pool itself, maintaining a CSI in the slightly negative range of about -0.3 should (over time) help to prevent future scale from occurring. More info below.

CSI and LSI - Further Reading

www.troublefreepool.com

Calcium Hardness - Further Reading

www.troublefreepool.com

 

[Scollops]

Thanks @Texas Splash - did an initial clean again with just a paddlepop stick first round see how it goes, then watch the

 

[Scollops]

Thanks @Texas Splash - did an initial clean again with just a paddlepop stick first round see how it goes, then watch the

Watch the CSI...

 

[ajw22]

Lower your TA to around 60-70 which will lower your CSI.

TA - Further Reading

www.troublefreepool.com

What is the pH, TA & CH of your fill water?

Lower Total Alkalinity

A lower Total Alkalinity level can help a pool owner stabalize their pH increase. We'll explain how to lower TA with a little help from muriatic acid.

www.troublefreepool.com

 

[Scollops]

Not sure on fill water yet....ill do that as next test. I do want to reduce TA but aeration is proving very slow and PH is not really moving from 7.4 yet...

 

[ajw22]

What are you using to aerate to raise pH?

 

[Scollops]

Mainly return eyeballs upwards, kids playing ....was brainstorming options without chemicals... ideally cheap and easy

 

[ajw22]

That is not aeration. See some ideas in Aeration - Further Reading

You can construct some sprayers using PVC.

 

[Scollops]

Hooked up hose to return, mini fountain. CSI 0.08 now reduced PH once already, crrently back at 7.4 will check again next few hours. TA is holding at 125.

 

[Texas Splash]

Let the pH rise fully to about 7.8 - 8.0 before hitting it with enough acid to lower the pH to about 7.0. That larger swing will have of an impact on the TA. Good luck.