How long for co2 to drop?
Setup my first planted tank, after years of un-planted tanks and poor attempts. And I'm going 'all in' with a high tech tank setup this time around.
Anyway, I'm running pressurized co2 with a solenoid and a T5HO lighting setup on my 29g. I got the co2 dialed in so that the drop checker stayed a nice lime green. Shutting the lights and co2 off at night, in the AM, it was still lime green. So the next night, I left the lights on, but still cut the co2 (thinking the plants would suck up any remaining co2). And it was a darker green, but still not back to blue.
Will the drop checker not go back to blue? Or does it just take that much longer for the co2 to drop? I'm wanting to dial things in so I feel confident stocking with fish shortly. I'm using a basic glass drop-checker with a pre-mixed solution. I did go ahead and change it this morning with fresh solution, which was of course initially blue; and I came home this afternoon to a nice lime green color.