can someone give me advice on setting up a herbie overflow

[fishytime]

Originally Posted by megs_clark

And Fishytime, great tank. Im only half way through your thread and it looks amazing!

Thanks for comp Megs....you can drill the hole small and then use the edge of the bit to "ream" hole bigger(I had to do that once....not fun but it works)...

Originally Posted by untamed

Just a couple of additional thoughts regarding this diagram...

1) The primary drain line (the one with the ball/gate valve) is shown in this diagram to have a tall standpipe up inside the overflow box. That pipe isn't necessary. In fact, I don't think it is a good idea. Optimally, the water level in the overflow box operates at some point which is ABOVE the primary drain, yet BELOW the emergency drain. In this diagram these two drains are very close in height, providing little room to operate.

Further, if there isn't enough water depth directly above the primary drain, then it tends to form a vortex and suck air down...which defeats the entire purpose of the design.

There is a happy medium there....some people just screw a strainer fitting into the bulkhead.....I wouldnt recommend that either....you need to be able to reach it,to unscrew it, to clean it every once in a while....I have mine a little over half way up the overflow box.