If you follow the instructions on the growweedeasy guide , you won ' t mess up . By all means , use a hygrometer for your first crop , but after a few rounds you ' ll get a better idea of what the product is supposed to feel like as it ' s dryingcuring and it won ' t be necessary . The point of the Boveda packs isn ' t to addremove moisture from the plants during the first 2 weeks of curing but to maintain humidity in the jar you store it in afterward . Trust the guide . I ' ve done my own ab testing , and find them to be an unnecessary cost , even for long term storage . If you don ' t trust the guide I ' d suggest that you do your own test . One container with the pack , one without . <| sep |> I changed the motherboard and the case . Is the power supply sufficient ?