Looked at you plan go with a sunken tank as it more fail safe and multi feed lines as if you first one clogs ..... your screw. see my print.
Think if it can happen it will, believe me after a few dacades of growing I have seen it.
Had a crop grow so fast at bloom , got so thick the whole crop broke in 1/2 and salvaged about a pound of almost mature buds.
Had a home made co2 gen go goofie and killed a whole crop
Alway have a spare bulb even if they are all new.