Can't Get Clear (Have PS233 Results)

[aswetich]

I have been unable to get my pool clear since I opened it about 5 days ago. Yesterday I added pool flock in a attempt to clear it up and nothing changed. Here is what I have right now:

FC=3.5
CC= .5
TC= 2
PH=7.2
Alk=140
CAL=150
CYA=60
Temp 59 Degrees

Can see 3' end bottom, unable to see bottom starting at 4'.

20X40 with 8.5 deep end (Liner)

[mwsmith2]

What type of filter do you have? Are you running 24/7?

[aswetich]

Sand Filter Running 24X7

[CarlD]

OK, with that CYA, you should NEVER let your FC go below 5ppm. Start there.

[duraleigh]

I have been unable to get my pool clear since I opened it about 5 days ago. Yesterday I added pool flock in a attempt to clear it up and nothing changed. Here is what I have right now:

FC=3.5
CC= .5
TC= 2
PH=7.2
Alk=140
CAL=150
CYA=60
Temp 59 Degrees

Can see 3' end bottom, unable to see bottom starting at 4'.

20X40 with 8.5 deep end (Liner)

Aswetich,

Given your CYA of 60, I think there is a very good chance you have never reached "breakpoint" Cl (shock level).

If it were my pool, I would bring the Cl up to about 20ppm and KEEP IT THERE until you can hold virtually a constant level of Cl overnight.

Time and time again, both us forum "old timers" and "newbies" try to make the issues harder than they really are. Time and time again, the answer to murky, cloudy, green, etc. etc. water is Cl.

Download Michaels calculator and go get some bleach. I'll bet it will clear your water. BTW, What type of Cl did you put in your pool when you opened.?

[Watermom]

aswetich:
Just a comment. FC + CC = TC.

Watermom

[aswetich]

Ok,
One person says to keep the CL (Is this TC?) at 20 ppm and one says don't go below 3.5 FC. I am assuming they say the same thing so I will ask the question I have related to the bleach calculator. The bleach calculator has a ppm increase field but I don't know how to calculate what my existing ppm is. Can you tell me how to use my numbers above to figure out the current ppm so I can enter the ppm increase in the ppm calculator ?

Thanks

[mwsmith2]

You don't calculate what your existing PPM is, you measure it with a test kit. Measure the FC with the DPD-FAS test. If you want to get to 20 ppm Cl, and your test results are 3.5, then 20 - 3.5 = 16.5. Put that number in the ppm increase field and hit calculate. You'll be shown how much bleach to add.

Michael

[aswetich]

That is what I calculated but I assumed I did something wrong. My 32K pool will require 8 Gallons of 6% to get to 20 ppm. With the readings I displayed above does 8 gallons seem correct ? What number do I want to use to keep at 20 ppm ? FC, CC, or TC ?


Thanks

[mwsmith2]

If you are currently at 5 ppm, then yes, 8 gallons of 6% bleach will take you to 20 ppm. However, if you have 3.5 ppm right now, you are going to need 8.8 gallons, or 8 Gallon(s), 3 quart(s), 0 cup(s) and 6 ounce(s).

For sanitation/algae killing the number that does the work (the one you want to use) is FC.