My New 72"x20"x20" Tank Build

[GreenSpottedPuffer]

Originally Posted by banditpowdercoat

Ya, if your sump can handle the whole tank draining down to the level of your drains, then no problem. I would, for piece of mind want my sump to be able to hold all the tank water down to drain level. That way, if there is a problem in future, you know for sure that the sump will not overflow.

Yeah I would too but this is a Herbie overflow and therefore the bulkhead is on the bottom and no stand pipe except for the emergency one. This is actually why I wanted a bit of a standpipe but people here were telling me not to have one at all. On RC I have seen most people use a short standpipe for the main drain of the herbie.

Thing is, its a small leak at the bottom of the overflow but if the power went out, it could drain the entire tank, slowly. I hope I can just add more silicone ontop of whats there but Im not sure. How can I tell if I need to cut it all out or just put a good layer ontop?

The overflow itself is very stable and well attached. I tried before to pull it off to see how well it was attached and it wouldnt budge. I used so much silicone on the outside of the overflow that Im really surprised it has a leak! I think it may be just in the corner where the overflow glass meets the tanks silicone.