You would just get an evaporation humidifier and an exhaust fan being run by a humidistat
Thats alot to go through, thats why the pack would be awesome.
I use my flower tent to dry/cure my buds if my veg is behind schedule and i set the fan to turn on and off for an hour every 3-4 hours.
Works really nice but as of lately my veg has been waitin for my flower to pick up so im back to the closet.
Thats why a fat ass 250-500g pack would be awesome. adjust the jumidity for a small closet.
Ive debated getting bulk silica gel but they dont regulate just absorb.