Funny story - when I got my first rack, similar to a RBI, I had put holes in the tubs. The next morning, Karl got up before me and was making coffee and comes to the bedroom - "Hey - your new rack is steaming".

I shot bolt upright out of bed and came racing into the living room - it was just condensation from high humidity and I had to put more holes in the tubs. Talk about a rude awakening - I thought I had cooked my snakes!