[Magickiwi]

Originally Posted by brizzo

What size hole are you drilling and where abouts?

Here are pics of how I drilled my tank: http://www.canreef.com/vbulletin/showthread.php?t=63026

I'll be drilling into the back wall of the aquarium. The bottom is tempered glass so naturally I don't want to be doing anything with that.

The outlet to the chiller will be nearest the bottom and the inlet will be a few inches above that. I'll have to do a 90 deg angle in there in order to be able to connect back to the sprayer in the display.

I'll be drilling a 30mm and a 40mm hole.