glassholes kit or cpr overflow

[rtague]

Which would be better for 40 breeder.

 

[Reefs Creation]

Definitely glasshole kit, but you need to drill a hole into the glass. Having a drilled hole for overflow is the safest way to go. The Cpr overflow box solely rely on the aqua lifter pump to work, once the pump gets warned out or fails, you loose the siphon and can cause a flood on your display tank, unless you dont mind replacing the pump often.

 

[rtague]

Thanks Alan,pretty much what I thought.I'm a little wary of the drilling part,but apparently not that hard to do.