Oh, and the large bulkhead was to drain to the
sump and the smaller was the return. Pretty standard. You just need to make a cheap standpipe.
Ohhhhhh... that's a clear overflow. You should probable consider putting a black backround on that tank and then cut acrylic to cover the panels that are visible. You don't wanna have to see the standpipes and you certainly don't want a tank without one. Not with that kind of drop..... louder than niagra.