Humidity is a minor concern at the best of times. Personally I have never had a bad shed and no humidity problems with rack tank enclosure. Even when the room is 30%rh. It only takes understanding of what you are dealing with. There are so much false information about humidity out there it is ridiculous!! Light bulbs suck the water from the air for example... Glass is as close to 100% water proof as you can get.

Racks ate great tools but the cost of heating a whole room can be exceptionally hight depending. Too high in many cases. If you are unwilling unable to do so it may not be the best tool.


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