Low PH

[NaCl_H2O]

What time of day are those readings from? Whats it at at night?

Good point - these readings are typically when I get home from work at around 7:00pm.

I think I am a little bass akwards on my Kalk timing. I let the Kalk mix overnight and settle for 3+ hours before the top-off system comes on in the morning and then remains on all day. First thing in the morning the tank gets a healthy dose of Kalk water, and PH gets a healthy boost, but not extreem (maybe 0.1 at most), and the top off is throttled back so the RO/DI has to refill it before the pump can kick on again. Probably takes 2-3 hours for all the evening evaporation to be topped off.

Evaporation is good, and increasing now due to weather (AC runnning more). I have a Dehumidifier that I dump about 3/4 gallon out of twice a day :o

[JimD]

hhmmmm,,,, might wanna re-think that approach. Try mixng the kalk about three hours before lights out, that way when the lights are out and Ph bigins to drop, youll have a fresh batch of effluent to drip throuout the night maintaining youre Ph at the higher level. During the day, you should see a noticable increase in Ph.

[NaCl_H2O]

I have almost changed the timing a few times, but I am paranoid. My top-off got stuck on once and severely overdosed Kalk, so I like being able to check it out first thing in the morning before I leave for work.

Definatey worth reconsidering - Thanks!

[GaryP]

Steve,

With that huge fuge on your system I wouldn't think you would get much of a nighttime dip in pH. Are you running your fuge lights 24/7 or on reverse cycle?