Overflow glass cutting

[RadagastWizard]

I'm getting a 220 marineland and I want to get an external overflow box where you cut the glass on the top and glue the box on the outside coast to coast.

My lfs has said it's only possible on a custom tank bc you can't get a standard tank on a cnc machine. He could do it but it would have to have an internal box which I don't want.

My question is has anybody found a way to do this or have any ideas how to?

 

[ezerasurfr]

Plenty of people drill their own tanks, so this is totally possible. I think they probably don't want to risk the damage doing it themselves.

You don't need the cnc machine to drill the tank. A guide attachment will keep the drill in place, and you can even use a template to make certain the drill doesn't jump.

If you want a coast to coast on that tank, no matter what it will need to be drilled. A good diamond bit, continuous water flow and patience will put some nice clean holes in that tank.

 

[MaccaPopEye]

I think OP is asking about cutting a few inches down along the entire length of the tank so that the back wall of the tank actually becomes the weir and then gluing a external overflow on for the water to go into.

If I am right then your LFS is right, this really is more of a custom tank thing. It could maybe be done at great risk to the tank with a hand held tile saw but I would advise against it.

What I would consider doing if I was you is drilling 2,3 or 4 holes along the back of the tank and gluing the external overflow box on. Then inside the tank glue a length of glass in like a low profile weir. Kind of like the synergy reef ghost overflow boxes. Water flows over the glass weir inside, then through the holes you drilled and into the external overflow box. This is what I will be doing to my tank later this year.

 

[Highweigh]

You can do a coast to coast overflow without having to cut a whole piece of glass out.

It would just have several holes drilled across the aquarium with bulkheads going into it.

You probably wouldn't notice much of a difference and it would be a lot easier.