Here’s my setup.
With the additional desiccant/desiccant mods (see link above) for the AMS, I’ve found you can store your filament in the AMS for about a month before it requires the desiccant to be changed (or recharged). Depending on material being stored, you could store for longer though. Personally, I prefer to keep the humidity levels below 5%.
My guess is that if you are in an environment with higher humidity levels, you’d need to change the desiccant more often. I’m in Arizona (US), and the average humidity levels tend to be rather low (32% on average). In comparison, Alaska (77.1%), Florida (74.5%), Louisiana (74.0%), Mississippi (73.6%), Hawaii (73.3%), Iowa (72.4%), Michigan (72.1%), Indiana (72.0%), Vermont (71.7%), and Maine (71.7%).
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