depends on your growroom size. for me i got a 250watt Wood's dehumidifier fow like 250$ a few years back and it works like a charm. it is a necessary investment if you grow big thick buds i fire it up for a whole 3 weeks at the end of flowering and it is great, makes the buds thicker and frostier, much better harvest. IMO it's a great investment. however i never used it in drying plants except if want to quickdry a bud which i chopped before flowering, i would hang it infront of my dehumidifier and in 24hours or so it's smokable. not what you want when you're curing a harvest. i only put a fan on for the first 2 days or so then shut it off and let them slowly dry...