[will74]

Does anyone know if the sides of a perfecto aquarium are tempered?

 

[bentcountershaft]

They weren't on my 90 gallon Perfecto, but I haven't checked on my 125 yet.

 

[96firebird]

Some sizes are some aren't, the link is from the marineland site, find your tank.

http://www.marineland.com/sites/Marinel ... 0Specs.pdf

 

[bentcountershaft]

That seems kind of strange that the only tank listed with all panels tempered is a 55. Sounds like you're good to drill, assuming that's why you were asking.