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!

[gastone]

Contact Oceanic and find out if it was tempered. I don't think Oceanics are, but I could be wrong. If it hasn't, I say go for it.

 

G.

[overklok]

The bottom is tempered on Oceanic systems, the side panels are not tempered.

[Brian Ward]

As long as you confirm the sides aren't tempered, definitely drill. I put 6 holes in my 120 AGA for a closed loop (all in the back panel). 2 2" "drain" holes and 4 1" "return" holes. All runs through a Reeflo Barracuda and an OM 4-way. I definitely like it.

[Boret]

As Sarah Palin would say: "Drill Baby, Drill!!"

[tsprice82]

glassholes.com has a link to many manufactures panel specs. Drilling larger tanks is very easy.

[davelin315]

Look at the edges of the tank, too, on the outside where the panel is not siliconed. If you see any chips, it's not tempered. if you see that it's got no chips at all, that's some evidence that it may be tempered.

[Boret]

glassholes.com has a link to many manufactures panel specs. Drilling larger tanks is very easy.

I think you meant www.glass-holes.com right?

[astroboy]

I've had excellent luck with Eshopps overflow boxes. Is there any advantage to drilling as opposed to using those?

 

 

(Note that the siphon/drain combination is basically self-regulating: no matter how much or how little water your pump moves from the sum, exactly that amount is removed by the overflow. Also, an overflow has no seals that might go bad someday.....)