how to fix leak sump?

[Yellowrose]

I build a sum/refugium and just test for water leak and few places at the bottom leaked.

How can i fix this? apply the glue again? :confused:

[GROSSR]

Dry the sump out, and put some Weldon- 16 where you think the leaks are. I might try Weldon 4 from the bottom and 16 from the inside. 4 is the thin stuff, and 16 is the thick stuff.

Rich