Optimal humidity level for PTE-G???

[airscapes]

Once I dry a roll, I put the roll back in the plastic bag it came in and then that bag in a vacuum bag (from the $1 store or ebay) close it and suck the air out with the vacuum. This is how I store the roll until it is needed again.. remove it from the printer when the last job of the day is done and seal it up.. The reason for the double bag is that when you vacuum the bag down, any sharp edge will cause a leak. putting the roll in the bag it came in and then the vacuum bag makes the vacuum bag las longer.. I don't really do much drying of PETG with this process.. as it stays dry as long as I put it away when not in use.