Great tip about the toothpick! You think it would be easy to really tell if they need water, which at times it usually is but sometimes i want to water when they really can go at least 1 more day till watering. So do you mean dehumidifier or does it really get to dry in your grow ?
It's dry this year. It does not usually stay that way, I believe that now the temperature tends to get better, and the humidity also. The carbon filters have doubt as to whether they may be contributing to that dry air inside the grow.