All you need is an uth on one side of the tank. The night drop should be able to hapen on its own because the temp of the room will prolly drop at night. If the temp doesn't drop down at night you can either turn it down a couple of degrees with a rheostat or you can buy a thermostat with built in night drop that automatically drops the temp. for you.
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if something doesn't fit hit it with a hammer, if that doesn't work get a bigger hammer: Jesse James
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