So interesting occurrence happening with my humidor. Over the last month or so I've been watching the humidity slowly creep up to 71%. Apparently the seal are so damn good and my cigars and boxes so stable, that just having the two water tanks has caused the humidity to creep up.
The humidity canister fans haven't engaged in weeks. And even after keep the doors open over the weekend, once I close the door it stabilizes back to 71%. So now I've removed the water canisters entirely.
We'll see how long it takes to creep back down. I've been dry boxing the cigars I plan on smoking, so it hasn't caused me too many issues. Although I do notice some don't do so well if I take them fit out of the humidor and smoke them, most are fine.
Anyway, props to the airtightness of the humidor. I'm sure it will go back down once the drier winter air arrives.