Help with new tank!

[Chiefmaster30]

I just got a 120 gallon tank with built in internal overflows in each corner. There are no bulkheads! They have been removed! Why are there 4 holes? Is it for one supply and one return for each side or ??

 

[Mikey Mane The Flare]

I just got a 120 gallon tank with built in internal overflows in each corner. There are no bulkheads! They have been removed! Why are there 4 holes? Is it for one supply and one return for each side or ??

Pic? Maybe the 2 lower ones are you normal drain to your sump the two higher ones and back up over flow just in case your over ones get clogged.

 

[GoVols]

I just got a 120 gallon tank with built in internal overflows in each corner. There are no bulkheads! They have been removed! Why are there 4 holes? Is it for one supply and one return for each side or ??

Yes,
Each overflow box will have a down pipe going to the sump and a return pipe coming back to the display from the sump's main return pump.

 

[Chiefmaster30]

There isn't a lower and higher one. Apparently someone has removed the guts from inside the overflow.

 

[GoVols]

There isn't a lower and higher one. Apparently someone has removed the guts from inside the overflow.

On the top of each overflow box, is there a half moon cut out?

 

[Chiefmaster30]

Yes

 

[GoVols]

Yes

That half moon should line up with one of the holes and it's for the return pipe shooting back into the display.
The other hole in the same overflow box is for the down pipe to the sump.

 

[GoVols]

@Chiefmaster30
Do you know the brand?
Like an old Oceanic Systems?

This is a Marineland

 

[Chiefmaster30]

I'll look when I get home!

 

[GoVols]

I'll look when I get home!

I bet the the Aquatic Critter can hook you up with all the bulkheads and parts that you'll need.

 

[Chiefmaster30]

Can't find any type of brand on the tank nowhere. But... here are a few photos!

 

[Chiefmaster30]

 

[GoVols]

This is a Marineland but it could be a Perfecto... Looks like somebody makes them and puts different brands names on them.
The overflow boxes looks the same as yours and I'm sure "The Critter" could hook you up.

 

[Chiefmaster30]

Ok thanks!

 

[Chiefmaster30]

I'm trying to build this drain but I've found everything except for no. 8. The 1 1/4" street elbow. My question is can I order a schedule 80 no.8from brs and use it on all this schedule 40 pipe?