Hang On Overflow suggestions?

[Al Hobby]

I am not able to take down my reef now to have the tank drilled. My overflow broke last night and I need to find a good replacement that can handle about 600-800 GPH. I prefer not to have one that requires a powerhead to keep the siphon going. Any suggestions would be helpful.

 

[Al Hobby]

Ignore this post. I just realized I put it in the wrong Forum