High cya .... Need advice

[Jezza]

Ok- I think things have become a bit confused around the CYA test here- if you initially reported a CYA level of 100 or greater, then did the 50:50 dilution x2 you should expect the black dot to disappear before you fill the CYA tube. In other words If you are greater than 100 you would expect the black dot to disappear.

Perhaps go back and perform the 50:50 test. Have you checked that you are conducting this correctly?

 

[Goodtwin]

Yea I agree .... I have to wait until tomorrow to retest Bc I'm at work at the moment.... But I will redo the cya

 

[Goodtwin]

Ok- I think things have become a bit confused around the CYA test here- if you initially reported a CYA level of 100 or greater, then did the 50:50 dilution x2 you should expect the black dot to disappear before you fill the CYA tube. In other words If you are greater than 100 you would expect the black dot to disappear.

Perhaps go back and perform the 50:50 test. Have you checked that you are conducting this correctly?

Just want to be make I'm doing this right.... When u say 50/50 that's under the label correct ? Then R-0013 to the top of the label?

 

[triptyx]

No, they're talking about dilution.

You fill the bottle to the bottom of the label with pool water. Then to the top of the label with tap water (which is CYA free). You shake the bottle, then pour out the resulting water until you're at the bottom of the label again. Then you add the CYA reagent as per usual and test, multiplying your result by 2. E.g. if your result is 80, your CYA is 160. If you still have a 100 result with the dilution method, mix up one part pool water to three parts tap water and repeat the test again.

Make sense?

 

[Goodtwin]

Ok think I got it.....I believe my initial cya testing was incorrect.... Today I performed all tests indoors ( diluted and Reg) .... When I performed both diluted tests the dot did not become obscured .... So i retested regularly twice and both read in between the 35-40 line. Would this be accurate considering the diluted test had no reaction?

 

[Jezza]

Ok that's a good sign but the accurate way to do it is in full sun with your back to it, waist height. I would just confirm what your reading is based on this procedure -doing it outside as described. Then go from there.

 

[Goodtwin]

Hello again
Last night I added about a half a gallon of Clorox ... Here are my new readings as of today...

FC 2.5
CC 0.5
PH 7.2
CH 300
TA 120
CYA 30

The bottom of the pool looks better but I can still see some purple spots and some of it on the walls.

My question now is should I vacuum it up? If yes to waste or filter? Also should I do anything chemical wise?

Thanks again for taking the time out to help

 

[Jezza]

I would just vacuum to filter but it now might be worth performing an OCLT to see whether a SLAM may be in order. Your FC is just above the minimum for your CYA of 30 and I would try and get it up around 4-5 FC.