to drill or not to drill

[kylemagoo]

I have an Oceanic 120 about 5 yrs. old. I am thinking of drilling two-three holes in the back. I do not know whether the glass is tempered or not. There is a corner overflow with three holes already drilled.

Is it advisable to drill a tank like this? I am thinking of setting up a closed loop circulation system.

thanks!

 

[billdogg]

it is almost certainly not tempered. I would go ahead and drill - you will not be sorry!

Get the holesaw & bulkheads from www.glass-holes.com - great prices and customer service

 

[jhildebrand]

another place: bulkreefsupply.com. you will not regret it.

if there's already holes in it then it's not tempered.

 

[drparker]

I've drilled the back of a smaller Oceanic without issues so I would also say go for it.