Sump plumber?

[milkman754]

I want to connect my two sumps together. One is the refugium the other is the actual sump. They are fighting each other and if they are connected

they will equalize. So, who wants to drill them. I won’t even attempt it.

 

[redfishbluefish]

Most LFS's in our area will drill tanks for you. Bring the tanks in and they'll drill for you.