Ashurbarnipal's 80 gallon

[Ashurbarnipal]

I was afraid you would say that. As for this bulkhead, I don't think it comes off. It seems to be siliconed on. I guess I could seal it and do a hole on the other end.

I presume I'd need this:

http://www.amazon.com/DEWALT-DW5584-...655035&sr=8-17

and

http://www.drsfostersmith.com/produc...fm?pcatid=4009 This?

Would I need anything else, like an overflow box if I just drilled it right at the top of the water line?

Also, I have an old 10 gallon with a broken back, I was thinking maybe I could practice drilling on it first? Thoughts?

[Cliff]

What size of bulk head flange are you planning on using ?

[Ashurbarnipal]

The one inch one. That was what you recommended, right?

[Cliff]

Yes, just keep in mind you will need about a 1 3/4" hole for a 1" bulk head flange will fit through

[Ashurbarnipal]

Hmm, can't seem to find that size bit on Amazon.

Well, one thing I think I'll do is see if I can't figure out a way to pry off that bulkhead that's on it now next time I go out to where I'm keeping it.

[Ashurbarnipal]

Well, I just went and tried to cut out the bulkhead with a razor and it actually came out.

The hole itself is around 1 and 1/8th of an inch thick. So, can I drill around it?

http://www.amazon.com/45mm-Diameter-...3997874&sr=8-7

And if so, would it work with this?

[Cliff]

You can, but it might be a little difficult to do. I would suggest follow the steps that I explained in the below thread with one big difference. Do this in your yard/driveway and use a garden hose to run water over the bit as you are drilling the hole. It might be best to have someone else hold/use the hose to keep water flowing over the bit while you are drilling the hole

http://www.aquaticcommunity.com/aqua...ad.php?t=76407

As for the drill bit, I would suggest getting your bulk head flange first. That way you can double check the size of hole that you need before spending money on a drill bit. You can find the odd flange that is a little different than most. Better safe than sorry

[Ashurbarnipal]

Think it might not be a better idea to just plug this hole and drill the other side or would that weaken the glass?

[hockeyhead019]

That would weaken the glass but I'm not sure it would to the point where it'd be an issue... however it would definitely be a major eye sore

[Ashurbarnipal]

Someone else suggested a dremel kit might work for enlarging the hole.

I've never used one before, though, and like I said, really really thick glass.