drilling and plumbing a 40gallon JEBO....HELP!!! (1 Viewer)

[NewbieReefer]

I have a 40 gallon JEBO that I bought in Dallas. I've had the tank up for about amonth and a half w/ only a couple of cleaners. I want to transfer my rock/sand/creatures to a 20 high until I can finish plumbing. I know, I should have did it first. What I want to know is, does anyone know if the bottom and the back is tempered? I want to drill a hole in the bottom for an overflow and make a custom overflow, I also want to drill to more holes for a closed loop. If the bottom is tempered, can't I drill an extra hole in the back for the Overflow. I am going to drill the holes myself using a diamond bit and alot of patience and water. There is only one tropical fish store here in Corpus and the prices are outrageous. Any suggestions help. I thought about an exteral hang-on overflow but they are just loud and look really messy. I want a clean install. I also plan on building a sump/refugium for it. All help is appreciated. Thanks.

 

[Guest]

tank drilling

When I hear the term drill bit I think of wood or
metal. Glass is drilled with a device which is shaped
like a tube and uses carbide or diamond grit to grind
the glss slowly. Most glass is silicate and any attempt
to cut or drill it results in 'conchoidal fracture'. If drilled
slowly enough, with the proper device, backing and a
good coolant, the rate of success is increased.
Too fast a rate of cutting will result in chiping at the edge
when the drill breaks through and fractures away from
the center of the hole (eventual failure and leak). I