Four 1" overflow lines

[geko522]

I have two Eshopp pf-1000 hob overflow boxes. I got a second one for free and would like to use it. I have a 75g mix reef tank with a 40g breeder sump. I'm using a fleece roller and a protein skimmer. My question is, I run the four 1" lines to the sump and the fleece roller takes two of this lines, what do I do with the other two lines? I was going to take one line from each overflow box and connect to the fleece roller and the other two lines I don't know what to do with. Thanks for any guidance, I'm a newbie.

 

[theMeat]

One overflow/2 one inch lines for a 75g is more than enough

 

[theMeat]

Yep. With a u-tube style overflow if the flow through the tubes isn’t strong you can get air build up at the top of the u-tubes. If enough air gathers you loose siphon and it stops draining. Do not add a second overflow is what I would strongly recommend