Closed Loop ?

[Banshee]

Is there anyway to run a closed loop system without drilling the tank? I have a MAG 12 that I want to connect to two seaswirls. Anyone have any suggestions?

 

[skeeter-doc]

no need to drill the tank, just drill another return hole in your sump, ...

 

[theatrus]

Not even that

http://www.melevsreef.com/closedloop.html

 

[Banshee]

Thanks theatrus!! That's what I was looking for!