Is 4 drops of R0014 the de-facto for pH?

[ketofol]

I dropped in acid 2 days ago so I'm inclined to believe it should be closer to 7.2. 4 drops looks to be 7.2 and 5 drops looks to be >8.

So am I crazy? I see some people say 4 and I believe Taylor says 5

P.S. I'm aware about the Chlorine. I shocked it last week due to new construction debris and CC at 0.5. I'm adjusting and learning the chlorinator now and what levels it needs to be. CYA is 50 so I'm aiming for 4-8 chlorine.

 

[wireform]

How are you testing other then PH. The orange color is alot of FC. CYA of 50 is 6-8 target and 4 is skirting with danger.

 

[TinFoilHat]

With the TF comparator some people find it easier to read the colors with just 4 drops. That's what I do. I still like my old comparator better though the reagents weren't the same so I can't use it now. What you're showing is a large discrepancy between 4 drops and 5 drops so something isn't right. This is probably because you can't get a good PH reading with FC at or near 10 ppm or more.

 

[Donldson]

I'm aware about the Chlorine

What is your FC level? The pH reagent is not reliable when FC is above 10 ppm.

Did you do one test, take the picture, then dump the test and do an entire new test for the comparison? Or did you do one with 4 drops and then added another drop to the same test for the 5 drop test? If the latter then I'd wager that the first one was taken fast enough that the chlorine hadn't had time to alter the reading and it's generally accurate, but in the time it took to get everything in line for the second picture the chlorine had time to react with the reagent dyes and ruin the test.

 

[ajw22]

The pH test is invalid with a FC level above 10.

 

[wireform]

The FC color is atleast 15.

 

[Newdude]

Or did you do one with 4 drops and then added another drop to the same test for the 5 drop test?

When running the FC hot, which is always, 5 drops gets me that exact shade of purple above while 4 drops stays in the color scale for longer tha it takes to put it down and run a different test or two before dumping it.

I often use the FC side to run 4 drops / 5 drops side by side and 4 drops wins everytime. Sometimes I do 3 drops / 4 drops side by side and I have to struggle to see a difference.

 

[ketofol]

Ok, I see we found the problem. I posted some pre and post shock picture. After doing the FC test with TFPRO kit, I got 72 and 66 drops before it turned clear. I think what happened is that right now, our weather is being significantly bipolar so my water is fluctuating between 46-52 degrees quite often. I found out my Hayward SWG turns off at 50F. It was running 20% and I thought that was the lowest it could go when in low temperature operation. I learned yesterday I could drop it down to way way less. Apparently the generator makes a lot more chlorine than expected and that chlorine does not burn off as quick as I thought.

This is vinyl liner. I was trying to get CH is about 150-200, Alk to about 100, and CYA to 50 for the spring so I only had to mess with chlorine and ph for the summer. Not shown, but the salt here is inaccurate vs. the salt salinity tester the store had. Now it's about 3200-3400 post adding more salt.

 

[ketofol]

How are you testing other then PH. The orange color is alot of FC. CYA of 50 is 6-8 target and 4 is skirting with danger.

Noted. I wrote 4-8 to appease the internet but deep down, 6-8 was my real goal.

 

[ketofol]

What is your FC level? The pH reagent is not reliable when FC is above 10 ppm.

Did you do one test, take the picture, then dump the test and do an entire new test for the comparison? Or did you do one with 4 drops and then added another drop to the same test for the 5 drop test? If the latter then I'd wager that the first one was taken fast enough that the chlorine hadn't had time to alter the reading and it's generally accurate, but in the time it took to get everything in line for the second picture the chlorine had time to react with the reagent dyes and ruin the test.

I dumped and restested

 

[Newdude]

I got 72 and 66 drops

I'm assuming 25ml ?

Switch to 10ml and each drop is 0.5 FC.

The 0.2 resolution isn't needed and you'll save 2.5X the supplies.

 

[ketofol]

I'm assuming 25ml ?

Switch to 10ml and each drop is 0.5 FC.

The 0.2 resolution isn't needed and you'll save 2.5X the supplies.

Nope, 10cc --> one scoop of that powder --> kept swirl thingy running --> added ton of drops to clear lmao

 

[Newdude]

kept swirl thingy running

Its worth it weight in gold IMO.

Sure I can pat my head and rub my belly while hopping on one foot. But I'd REALLY prefer to only have to count how many times *you* did it.

 

[ketofol]

So they gave me a 40k SWG for a 21-22k pool so I'm assuming 20% is going to be a lot more powerful in production than 20% in a 25k SWG?

 

[Newdude]

So they gave me a 40k SWG

Your signature and profile says T3

so I'm assuming 20% is going to be a lot more powerful in production than 20% in a 25k SWG?

Proportionately more powerful. A T15 will make 1.7 FC when run 24 hours / 20% in 21k gallons. A T3 makes 1/3 of the T15 across the board. A T9 makes 2/3 of the T15.

 

[ketofol]

Your signature and profile says T3

Proportionately more powerful. A T15 will make 1.7 FC when run 24 hours / 20% in 21k gallons. A T3 makes 1/3 of the T15 across the board. A T9 makes 2/3 of the T15.

Maybe I'm getting the controller messed up which is a S3? But I guess the cell itself is T-15? A yes, the pump is running 24/7 right now. I can probably back down on it since chemicals are up and the pool is functionally running now. The date of FC at 8 was 2/17 so making 1.7 x 10-12 days tracks. That's 19 days ago and with it not running for a few days due to <50F, the numbers track out to FC of 30ish, if that makes sense to you. To confirm, when you say 1.7, is that PPM or 1.7 pounds?

 

[Newdude]

Ok GREAT. I fixed your profile to say T15.

Go into poolmath and hit the upper left hamburger menu. Go to effects of adding and select SWG. Then set your gallons, model, calculate for FC, and mess with % and hours to see the production. This skill will come in handy alot until it's all second nature.

 

[ketofol]

Ok GREAT. I fixed your profile to say T15.

Go into poolmath and hit the upper left hamburger menu. Go to effects of adding and select SWG. Then set your gallons, model, calculate for FC, and mess with % and hours to see the production. This skill will come in handy alot until it's all second nature.

Check my edit. You wrote this as I was writing my edit.

 

[ketofol]

Ok GREAT. I fixed your profile to say T15.

Go into poolmath and hit the upper left hamburger menu. Go to effects of adding and select SWG. Then set your gallons, model, calculate for FC, and mess with % and hours to see the production. This skill will come in handy alot until it's all second nature.

Is poolmath a app only or can you use it on a PC?

edit; i see it's a microsoft app on pc

 

[Newdude]

To confirm, when you say 1.7, is that PPM or 1.7 pounds?

Your unit puts out 1.5 lbs per day, which translates to 1.7 FC (ppm) at 20% for 24 hours.

Seriously go learn effects of adding in poolmath. Its great for every chemical, but especially great for the SWG math.