Planted Tank Obsessed
Join Date: Feb 2011
Location: Jackson TN, U.S.A.
Interesting. I'm thinking that there might be enough space in that box for a Durso topper, or a "gurgle buster" attachment. I'm on my phone browser so I'll let you Google those. :-)
Certainly you could use something with that over-the-top approach rather than drilled, but you will need some way to guard against a loss of siphon on it.