After the fiasco the other day.
I went down and got a new piece of glass price $14.00.

I’d drilled the hole for the bulkhead before I put the glass in the tank.
It took all of about 6 1/2 minutes to drill the hole.
With the drill bit I got it was simple to do.
Just take your time and remember you’re not drilling
your grinding a hole.

Was all of this worth it.
Very much so, the higher flow rate and I don’t have to worry about
DIY overflows failing and that has happened not very often but it has happened.
It’s just this sweet deal.

The only thing I have to say about drill holes make sure that the glasses not tampered!