I have 1/2 lb. hf beads on the bottom and another 1/2 lb. in the top drawer, plus some bovedas throughout just because I had the bovedas before getting the beads. Mine is a small wineador, so I don't worry about checking RH at different levels...I just keep the hygro on the middle drawer. I used to keep the power on for cooling during summer, but I noticed it would dry out my beads/bovedas far too quickly, so this summer I haven't plugged it back in. The wife keeps the house cool enough so that I don't need to worry about it.