Tank/Sump W/O Holes

[MMAX]

I don't think drilling is an option for me, both my tank and sump are tempered glass.

[Abbyreefer]

MMAX - do you have the tank set up yet or is the tank empty ? If your tank is empty - if it were me I would sel the tank and buy one that can be drilled. The CRP is ok and will get you by but trust me from personal experience you will never feel 100% with a external overflow on the tank. Its cheaper to get a tank you can drill now then to have to change it later on like I am.
If the tank is stocked then the CPR's are ok.

[mark]

Originally Posted by MMAX

I don't think drilling is an option for me, both my tank and sump are tempered glass.

depends on tank but sometimes just the bottom tempered