it has vents, and a small but powerful fan, I may have to replace because its alittle Big for the thing, and though its going to be excape proof, (built it from the inside out) its not compleatly Air tight.
I did a mini Terrarium and found out right away what "air tight" did to plants. so this one is Far from air tight, the fan forces air down to the vary bottem, where it has two vents to excape from, and I plan on having the fan on for a few hours every day, simply because of the humidity.
and no, I relized that this tank isnt right for corns, halfway threw. and I have to say thats part of the reason why Its taken me so long to finish it, guess I was dissappointed, and was thinking: if it isnt for my corns, then really why am I doint this?
but everyone seems excited to see it finished, so im doing my best, Ill finish grouting the first layer today, and start on the second tonight.