CO2 at ~30PPM With No CO2 Injection?
I ran my CO2 for a few hours on Tuesday when I first installed it. I got up to 30PPM CO2 within a few hours, then it was almost bed time, so I shut it off.
Yesterday morning I was still at about 30PPM, so I didn't run any CO2 while I was at work for the day, but left the light on.
Ran CO2 for about 30 mins last night, then turned it and the light off (light off a little after CO2).
Checked this morning and I was at about 20-30PPM...
Do I just not have enough plants to use that much CO2?
I'm really new to high tech and I don't understand what's going on.