overflow

i just went to another shop around town, he told me that i tank, 120g with one overflow is not enough, he said that ill need too since the overflow with one drain hole 1" each only can run around 600 gph, he suggest that i get one with 2 overflow or build a close loop system, how do u build one? is he right or wrong?

 

48x24x24 120g

 

Yes,hes right about the two OF's.

 

but the tank only has one what should i do?

 

Is it a HOB or a mega flow "chamber" like?

 

mega flow chamber with the holes down the bottom

 

That is weird that a 120 came only with one. How big are the holes? If one is 1" and the other is 3/4" then you should get another mega flow. Is the tank set up?

 

brand new tank from perfecto the drain for sure is 1" don't know about the return though what do u mean by get another one?

 

The drain should be the 1" and the return 3/4". What I meant was if the tank is empty, try to get another mega flow installed.

 

maybe other brand might carry them I don't know but I will check later and see