Closed Loop plumbing

[Dpgirl80]

Hi Reefer’s,

I need help plumbing my 125 gallon close loop system. Any suggestions will be helpful. First time plumbing anything . I have enclosed photos of tank to show what I’m working with. Help Please

 

[Brew12]

Hi Reefer’s,

I need help plumbing my 125 gallon close loop system. Any suggestions will be helpful. First time plumbing anything . I have enclosed photos of tank to show what I’m working with. Help Please

I'm not sure exactly what you are asking for help with. Do you have a more specific question?

 

[lapin]

Im confused a bit also.
I see 2 overflows that go to the sump.
I am assuming the 2 small holes in the back of the tank at the top are for the sump return lines.
The down turned gray elbow in the tank was prob the intake for the closed loop it should have a strainer on it. It might hav had 2 intakes for the pump. Maybe the hole on back that mirrors it. The two larger holes could be the returns for the closed loop.
I could be wrong on all this.