ps234 test results - first post

[charlie75]

I have been visiting this site for 3 years -- learned a lot. I finally bought the test kit. My results are
fc-2.5
cc - 0
ph - 7.2
alk - 70
cal - 190
cya - 25
temp - 83
35,000 gal 20 year old gunite.

I bought a heater 2 years ago and in the documentation it recommends lower calcium because "things" can grow in the heater and it won't be covered. so I try to run the calcium around 200. If I bring up the ph a little will the alk go up or down (I can never remember everything I read at this site).

[mbar]

If you want to bring up the ph, use Borax, it won't raise the alk. much, if at all. But since you have low alkalinity - you want it between 80 - 120, you can add baking soda - it will raise both ph and alk.
Here is a link for the bleach calculator, click on the top more calcs) and there are other calculations, there is one for ph and alk

http://www.hal-pc.org/~mwsmith2/BleachCalc262.exe

[charlie75]

Thanks my ph went up to 7.5 so that looks good --
If I want to increase the calcium a little what do I add --- I really don't want to get the powder chlorine with the calcium but if that is all I can do that I can use some pucks.

[Watermom]

You can buy some calcium chloride and use that instead of cal-hypo if you prefer.