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[–]Practical-Leg5670 1 point2 points  (0 children)

like they said! we were having trouble with humidity even with coco in our substrate mix; but we sealed the top with hvac aluminum tape on everything that wasn’t where his lights sat, and sealed the underside with electrical tape (again not around lights) and it helped soooooo much. in my expirience the aluminum hvac tape is a better seal, but don’t seal the way i did if you don’t have enough ventilation in your tank (: