Herbie drain questions

[dburt520]

I was wondering if a herbie drain has to be plummed from the bottom of the tank? I am looking at buying a 40B and drilling the back of it (bottom is tempered), and was going to either make an overflow or purchase a glass holes box.

A few ways to do this are going through my head:

Drill my holes as low as possible in the overflow, but on the back wall and just use a 90 elbow UP (not sure if I want the 90 that early in the siphon, or if it even matters)

Drill two holes on the back glass inside the overflow and plum the 90 DOWN and OUT from there and directly into the sump.

Anyone have any input?

[RedStangGA]

While mine is drilled in the bottom I can't think of any reason the herbie wouldn't work through the back. No reason to drill low. You have the opportunity to save some tank space and get some great surface skimming. Good luck with the build!

[SGT_York]

Look at the Bean Animal setup, it's essentially a herbie drilled from the back.

[swk]

I run the same setup and drilled 2 1" drains in the back wall at the top of the tank and run a herbie