1st test results from arizona

[dirtfrmr]

Hi folks
I introduced myself in the intro section
current only visit az occasionally
so a pool guy will take care of the pool
so to get prepared to care for the pool
I have purchased and became a member here

I visited last week here are my first results

20,000 gal pool with swg system
spa and water feature
two jets for resistance swimming
solar system installed and working
pictures in the other sections
pool temp 86 to 90 during my visit
salty taste to the water
water was clear

cl 4
tc 12
ta 50
ph 7.2
ca hardness 1300 ? not sure measurement was correct
cya 60
temp 86 to 90
sun full all day
temp outside was 105 to 114 during visit
pool was enjoyable, sometimes too warm late in the day


number look good except hardness
have a tf 100 test kit
just learning, appreciate comments
new pictures in the future
thanks in advance
dirfrmr

 

[jblizzle]

So is "cl" = FC and "tc" = TC? The TF100 measures FC and then CC, so is the "tc" you reported the sum?

If so, you have a VERY high CC number which indicates a need to go through the shock process. I am surprised the pool did not smell and hurt your eyes if that number is correct.

The CYA is slightly low for a SWG, especially in the AZ sun.

And the CH, if correct, is VERY high. To not have a chance of developing scale, you will need to keep a close eye on the pH and TA numbers.

FYI, the only way to lower CH is through water replacement or a reverse osmosis service.

 

[JasonLion]

When doing the CH test, did the sample turn purple? If it did, that is called a floating end point, and can result in higher than actual results.

If CH really is that high, it is time for either water replacement or a reverse osmosis treatment to bring the CH level down.

Also, there are two chlorine tests in the TF100. Which one did you use for each of your two chlorine test results? The OTO test, drops turn the sample some shade of yellow, measures TC from 0 to 5. The FAS-DPD test, powder turns the sample pink and drops turn it clear again, measures FC and CC from 0 to 50 is steps of 0.5.

 

[jblizzle]

Ah yes ... I think Jason got it.
You likely got the 4ppm from the OTO test and the FC of 12ppm from the FAS-DPD test and did not test for CC (or it was zero). Is that right?

 

[dirtfrmr]

ok, i will check again during may next visit,sorry for my incompeticy,i will read pool school again, thanks for your comments