High FC

[MK1985]

I did a test tonight and I'm a little concerned with the FC.

FC: 15
CC: .5
TC: 15.5
pH: 7.2
T/A: 120
CH: 100
CYA: 60

I need to raise the cya alittle and the ph but what about the FC?

 

[duraleigh]

Leave everything alone except dial back your SWG or turn it off until your FC reaches about 5 ppm then restart SWG on a lower setting.

Your pH will come up on it's own and you can add about 10-20 ppm CYA whenever you wish....no hurry.

 

[durandetto]

I'd watch your ph, if your fc is that high and your ph is 7.2(not sure the accuracy with the high fc) from what I've read a lot of chlorine should raise your ph so keep an eye on that.

Sent from my SPH-L720 using Tapatalk 4 Beta

 

[Richard320]

I'd watch your ph, if your fc is that high and your ph is 7.2(not sure the accuracy with the high fc) from what I've read a lot of chlorine should raise your ph so keep an eye on that.

Sent from my SPH-L720 using Tapatalk 4 Beta

Good catch!

pH shouild be rechecked and adjusted after FC dips below 10.

High FC doesn't actually change the pH, it changes the phenol red reagent so it misreads.

 

[MK1985]

I can turn the swg off for a while and when the FC drops I will adjust the pH. I have a jug of the pH Plus from Walmart, is that good to use?

 

[Richard320]

I can turn the swg off for a while and when the FC drops I will adjust the pH. I have a jug of the pH Plus from Walmart, is that good to use?

Yes. That is Soda Ash.

 

[JamesW]

With your TA at 120, your pH will rise on its own. Adding pH increaser would probably result in a too high pH. Just wait and retest. You could add an eyeball to the return to allow the return water to ripple the surface, which will help raise the pH.

 

[duraleigh]

+1 what JamesW said.

 

[MK1985]

Thanks for all the help and ideas I will see what I can do, also is it safe to swim because it's crystal clear and warming up slowly.

 

[duraleigh]

Swim away!