A little help please. Monti's slowly dieing

[Instar]

Check different places in the system at several times during the day to try and determine where exactly the pH is getting too high first. It may give clues to the source. Then try thinning the macro out a little. Then monitor the pH at different times. If it is still swinging too high, check the affluent of the macro fuge to be sure that is the source. If it checks out, then try adjusting the lights for a slightly shorter time. Take it slow in case it doesn't need much adjusting.

Do you have a control to be sure your test kit is reading properly?

[z28pwr]

Las time I had large PH swings like that was because my PH Probe needed replacement. Like Larry said make sure your measuring system is not the one at fault.

[ou812pezz]

I'm using a pinpoint electronic monitor. I'll recalibrate it. It's only 5 months old. I do have a lot of cheato though. I'll thin that as well. Thanks guys.