With buying more filaments I reached a point in which storing the open ones in an airtight containers was not a comfortable option anymore, so I came up with this solution which is working perfectly.

You need:

- Cabinet with doors

- Portable electric air dehumidifier

- Window seal

Place window seal on the shelf sides, put the dehumidifier inside the cabinet together with your open rolls and start it. My filament now don't need drying before printing and for a month there is not a single drop of water in the container of the dehumidifier. As comparison at first it was in more air leaking cabinet and I was emtying the tank every week.