Leak in overflow

[Jamie S]

I discovered that the leak into my overflow is from a small hole and after simulating a power failed it fills up the overflow Which then overflows the sump. It’s about 4” below the water line so quite a bit does drain out. I tried gluing a piece of plastic over it but it’s still leaking. I was wondering if perhaps throwing some jb weld over it but I’m not sure if it’s reef safe. Does anybody have any ideas? Thanks in advance.

 

[iTzJu]

you need drain the tank up to the hole and then find a piece of acrylic or reef safe plastic and use the appropriate solvent and let it cure. you can probably get away with using super glue with an accelerator as well but it the surrounding area needs to be dry.