Much thanks guys, More detailed pics to come, locks, finished light unit and anything else someone wants to see. I will also be done with my DWC bubble bucket design with water tap to drain, another tap just below water to get Ph sample/check water level. I may even try to put together an instructional vid for that and the bubble cloner I am also putting together in the next day or so. The tubs are already black so that eliminates much effort to block light.