I took one of the vent covers off the light hood to install ducting to an inline fan, but the fan was too loud for me so, I disconnected it. I left the vent cover off and wow it really cooled down the room a lot! So, I took the cover off the other side too!

I have a 9 gallon aeroponic system. The 55 gallon tank is in reference to the iceprobe's max compacity. Thanks again.