Nhan’s 140g
@RandyC. Yes, total 4x 1” bulkhead inside the overflow box. 3x for drain and 1x for return. Then that 1” return will eventually need to connect the the 2x 3/4” bulkhead output to the tank. look at the tank picture showing the overflow box with two output bulkheads.
www.bareefers.org
You can comment on my tank journal.