Back drilled tanks

[George]

Originally Posted by pelle31

Thanks for the reply's. The tank only has one hole in the top left corner.............anything I can do with that?

You can install a durso. The following web web site has everything you need to know about durso:
http://www.dursostandpipes.com/
I don't know how quite it is but I do know with only one pipe it won't be a fail safe system in case the pipe gets blocked for whatever reason. See if you can drill at least one more hole.