I'm working on a micro grow. 4 or so plants in a rubbermaid tote. Ill make a thread for the grow when everything is in place. I have bought a pc of pvc elbow pipe. The inner diameter is 1.875 inches. I plant on placing it at the bottom of the box and the 120mm cpu fan mounted up top somewhere. My question is. Will that provide enough air flow to exchange air. I will also be planting a small fan instide the box for wind simulation. The bottom tote is a 30 gal. I'm looking for one the same length and width but not as deep for the top. I originally wanted to grow in only one tote but after seeing how deep the lights would go in that's just not going to work.