Dry ice does work well, most bang for the buck, will say bottled compressed co2 dripping on the tops.
tlranger Reviewed by tlranger on . 10 day old seedlings looking great but need watering advice I'm using an airlift pump to drip feed the seedlings . Could I leave the drip feeders running 24/7? At the moment I drip feed in the morning and afternoon for 1 hour at a time.. There looking great but will they stand for watering 24/7? Rating: 5