Amounts of Chemicals HELP- Pool Math ??

Stewart80

Member
Jul 5, 2020
5
Levittown, PA
Hey everyone-- I am new to pool ownership-- and new here! I have a 22ft round, 4 ft pool with pentair dymo pump and sand filter with brand new sand. We drained and started fresh after major issues and a CYA of 123.. now we are waiting on the Taylor test kit so we can truly test for ourselves, but in the meantime we have been using Leslie's and at home we have clorox test trips and the app.. but I feel those have to be "off." We have followed the additions for the chemicals according to the PoolMath app but clorox is still saying that we have 0 FC. The Clorox testing strip also showed a drastic change in pH from yesterday (7.1) to this morning (6.8), Leslie's yesterday told us our pH was 7.2. All we added since then was liquid chlorine and CyA-- would this drop the pH or is these strips just not even worth our time??

One thing I am confused about is that some people suggest/mention adding "gallons" of liquid chlorine, pool math told us to add 44 oz when our FC and TC were at like 0, since it was fresh fill. We did that yesterday evening a little before "sun down". We also added cyanuric acid because our CYA was down to 28 after the refill-- we added 18 oz per the app. This doesn't seem like much and again those clorox strips still show our FC and TC at 0.
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
32,631
Laughlin, NV
Great start on ordering a quality test kit.

Only piece of data you have is the pH from the test strip, and that is only sort of acceptable. So ignore them all until you get your test kit.

The pH can come down with the addition of CYA. Not by much, so the strip is overstating it no doubt. Do not worry, the pH will rise when everyone gets in today and splashes around.

Add 5ppm FC worth of liquid chlorine this morning with the pump running. Go swimming.
Please check this but I am guessing your pool is 11000 gallons. So a half gallon of 10% liquid chlorine will work.
Add another half gallon this evening after swimming is done.

When you get your kit, run the full set of tests and post them here. Be sure to turn on Sharing on your Poolmath app.
 

Stewart80

Member
Jul 5, 2020
5
Levittown, PA
Great start on ordering a quality test kit.

Only piece of data you have is the pH from the test strip, and that is only sort of acceptable. So ignore them all until you get your test kit.

The pH can come down with the addition of CYA. Not by much, so the strip is overstating it no doubt. Do not worry, the pH will rise when everyone gets in today and splashes around.

Add 5ppm FC worth of liquid chlorine this morning with the pump running. Go swimming.
Please check this but I am guessing your pool is 11000 gallons. So a half gallon of 10% liquid chlorine will work.
Add another half gallon this evening after swimming is done.

When you get your kit, run the full set of tests and post them here. Be sure to turn on Sharing on your Poolmath app.
Thank you so much. We will do that right now, and Yes I will update my signature to include-- its about 11,400 gal!