[slief]

Originally Posted by Jonnywhoop

Finally up and running guys!

I purged the air for 24 hours with some remnant bubbles in between the media, but I went ahead and got my co2 going since last night. My ph in the tank was around 8.3 before starting. Currently my settings are:

3psi, 3ml per minute, bubble every 10 seconds.

Should my ph2 (reactor probe) be dropping this much? My settings are already incredibly low.

My understanding is that if I go to 5ml for example, it would give the co2 a bit less time to stick to the media which will in turn get my reactor ph back up?

I won't be making any changes until tonight after I test etc.

Thanks!



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Are you using a 2nd reactor to buffer the effluent? Looking at your pH graph, it looks like you have pretty large pH swings anyway so my guess is it will go back up once the lights come back on.

As for the reactor pH dropping, yes they should. While you are only running 3ml/min, 1 bubble per 10 seconds is a pretty fair amount relative to that flow rate. At 65ml/minute (20x your flow rate), I run one bubble every 2.5 seconds.. You are flowing much more Co2 relative to the effluent rate than I am so I would expect your pH to be very low in the reactor in a hurry.