Overflow questions

[butch]

I have a 29g (not drilled) and a 15g that I will use for the sump for my next build. What would be the benefit of drilling the back of the tank (if any) and going with a glass-h**** kit vs. drilling the bottom of the tank (if it is not tempered) and doing a herbie style overflow?

Is one better than the other or is it personal preference?

 

[butch]

Anyone?

 

[butch]

Wouldn't the external durso be something similar to this set up? If so, this is the kit I am looking at because as you said, it doesn't take up much real estate.

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[budsreef]

If it is a standard 29G it probably has a tempered bottom so drilling it there is probably not an option. Drilling the back shouldn't be an issue at all. I have done some of my tanks with just a pvc 90 degree and a strainer inside the tank for the overflow. Are you drilling a second hole for the return or running it over the top?

 

[butch]

I plan on putting the overflow box on it to help skim the top of the water. I'll also be drilling a second hole for a 1/2" return and add loc-line return.