PH 7.68 with Nopox

[WVReefJunkie]

Should I be concerned with pH that low? Reading is with a calibrated Neptune Apex probe.

 

[Diesel]

What time of the day was that when you took that reading?

 

[WVReefJunkie]

3am In sump with light on sump for refugium.

 

[mlandscape]

I have a similar problem but now got it at just over 7.8. You can see the PH drop on the Apex when NoPox added. I did wonder why PH dropped overall but hadn't though the No Pox was having a long term effect.

 

[WVReefJunkie]

This is a reading around 9 hours after Nopox has been added. This is where the systems Ph is at, I took the Apex probe and stuck it in the display tank to verify and it is spot on. I will check the fish out when the lights come on today. Thanks