I am looking to put a couple round vents in a 4’x2’18’ melamine cage. What size of round vents (round vents would be easiest) would I need for this size of enclosure? I plan on putting one or two lower on the cool size of the tank on the side wall, and then one or two up high on the cool side. What size and how many would work? And with my UVB bulb mount location (will be shown in the pictures),
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, where would be the best place to install the light fixture for the basking bulb, so he is getting both UVB and heat? Thanks.