When you get bored......

[golf nut]

If you are concerned about the herbie then do the overflow deeper, lose just 2 outlets from a 2 way at the bottom of the back of the tank, the upper 2 are doing nothing to help the flow anyway the way they are drawn, get the water to move from back to front at the bottom, fire the sump returns down the back glass, by doing this the surface water will move from front to back and get the best pre skim.

[Vancouver Reefer]

You mean like this:

[golf nut]

Yes, but even lower so you blow across the surface of the sand and get the detritus up into the water column. your returns from the sump will point down the back and effectively the whole tank will rotate backwards.

[Vancouver Reefer]

Ok so i get about lowering the returns from the OM and getting them to blow across the sand bed, but are you also suggesting i put elbows on and blow the return water directly at the bed??? That will stir up the bed every time the flow hits it???? Or am i missing something????

[golf nut]

What is the flow from the return pump?

[Vancouver Reefer]

The flow from the return pump goes into the OM....


Like this.....

[golf nut]

The picture is perfect but this should be for a closed loop, not for a return, this will drain the tank if the power goes off.

Keep the sump/water treatment plant and return pump completely separate from your closed loop/tank flow system.

[banditpowdercoat]

If you want to put outlets low in the back, they need to be on a closed loop system. I did my tank the way Mr Om is suggesting, with 2 separate pumps. The closed loop is on the OM, with outlets near bottom of tank. Then, the sump return goes over the top of tank, and points straight down the back wall of tank. This makes a nice rolling of the water. If you were to stand on the right side of tank, and look into end of tank, water will be making a clockwise rotation in the tank. I don;t have any debris settling anywhere. 3500GPH combined flow on a 130g tank

[Ian]

OMG WHY do i keep looking at hese threads all they do is spend my money? So many ideas that I want to put into practice.
This will be an amazing set up

[Vancouver Reefer]

So where do you recommend i put the intake for the closed loop? And what size pump would you recommend for a 2' cube???

VR