CH Level UP ?

[Patrick]

Since my conversion, I've been holding a CH level of 250 for the last few weeks. I have not added any calcium since the initial dose.
Did my weekly test today (using TF-100). Tested the CH level again two hours later and still the exact same result. The pool looks great.

FC- 7
CC- 0
PH- 7.7
TA- 120
CH- 360 (both times)
CYA- 50

I'm worried that if it continues to rise that I will begin to have problems.
Any advice?

 

[frustratedpoolmom]

As long as you keep your PH 7.6 or less you won't have a problem. Is your fill water high in CH?

 

[Patrick]

I lowered the PH a bit. I don't know what the CH level is on my fill water,
but I haven't had to add any in the last couple weeks because of all the rain that we had.

 

[duraleigh]

Patrick,

There are really only two ways for CH to increase:

1. Your fill water is very high in CH and is causing the increase

2. You are adding it.

Obviously you are not adding it on purpose. Are you using Cal Hypo to chlorinate? If not, I suspect a testing error....either on the current tests or, more likely, on the older ones.

BTW, your water is spectacular! :lol:

 

[Guest]

Remember that you can compensate for high CH by lowering the TA!

 

[Patrick]

I have been using just Clorox Bleach to chlorinate.
I will try to lower the TA a bit.