two drains to sump

So I have my sump almost ready and I have my 125G with two drains and two returns. My question is how do i route my two drains to the sump? Should I run both drains to the sump and tee off my return like the picture below? Better ideas?





Also, for my return: Does the lines for my return have to be equal length? In other words, can one return line be 1ft and the other be 3ft? Does it matter?

 

what size sump are you doing you almost have the same set up as me?

 

haven't decided on a pump. My drains are 1.25", So Should I go for 1500gph?

 

Crap, that's a lot of flow. What size tank?

Oh, I see..that just 10x. That should be fine. Why do you have two overflow lines of you don't know what to do with them? lol.

Spiting your return in half is fine, not sure about the difference in length, whether that matters.

I would take your return, don't tee if off to the fuge. Have it split & both lines directly to the DT. Have your 2 OF lines go to the sump - one to skimmer, the other to the fuge. Personally, I would have drilled one OF hole & then split it in half. But if they each come from the ends of the tank, that' works too.

 

thats how the tank came

 

lol. Dumb design...

The way I said was the best & most practical way I can think of.

On a side note... Some tanks are drilled with the return line going back through the glass(I do not know why you would want it this way). This will create "back-pressure" in the return line, which is why it's not commonly done, even with open-top tanks.

Are the holes one on each side of the tank? If so you could just use both as OF lines to bring them straight down to the sump, one for each side.

 

aquarium-tank-overflow-megaflow-all glass-aqueon-filter


two overflows in the tank. Each overflow box has two drilled holes. 1.25" and 1" hole on each side of the tank. So 4 holes total. Im assuming two drains and two returns.Isn't this common on large tanks??

 

That is normal for drilled tanks. The only difference is what company or special made tank has their overflows built. i would have both go to the skimmer and get a maxi jet and run a hose to the refugium.

 

I wouldn't tee the return line to feed the fuge. You want raw water going to the fuge so tee off one of the drain lines with an inline ball valve instead to get the right flow. I wouldn't think it matters if one return line is shorter than the other except the shorter one may have more pressure.

 

Guess I misunderstood. makes sense to me now. lol