Syphon Tube isn't Big Enough!! help

[Dewman]

Ok, I finally have my sump set up and I turned it on lastnight and adjusted the ball valves on the valve tree I built off the pump.
My problem is, the hose I have running back to the sump has INCREDIBLE flow, but the flow out of the heads is barely noticable. In order for me to get a good flow rate out of the outlet heads, I have to shut off the tube leading back to the sump and then my overflow box cannot handle the flow of water going back to the sump again, so the tank over fills.
Help me please. I am running a DP 1200 pump and I am using 3/4 inch ID tubing. There are only 4 elbows above the outlet on the pump and the rest is clear hose with barbed adapters. My valve tree is setup like this...

Looking at it face-on from left to right... elbow w/ ballvalve leading up to tank, T fitting from Pump(down), T fitting w/ball valve going to sump (down), elbow w/ballvalve going to tank(up). camera isn't with me so I have no pics of the setup. I will try to get one later if noone can help.
I wonder if having my auxillary flow tube, before one of my outlet tubes, is hurting the flow? Hmmm

 

[Christian Schwalm]

I'm not sure what you mean by "In order for me to get a good flow rate out of the outlet heads, I have to shut off the tube leading back to the sump and then my overflow box cannot handle the flow of water going back to the sump again, so the tank over fills."

Why would you close the valve on the drain line? Or am I misunderstanding something?

Christian Schwalm
SkyLab Industries
www.wetdryfilter.com

 

[Dewman]

OK it's like this,
I was afraid that the flow out of the outlet heads would be too much water, so in addition to the two ballvalves leading back to the tank, I also included one going back to the sump. My drain line is fine, sorry if that threw you.
The third valve going back to the sump is what I was referring to shutting off. If I do so, I (of course) get better flow out of the other two heads.
My problem is, when I close off the third valve, mu U-Tube in my overflow box isn't big enough (1.25 inches) to handle the flow of water back to my sump, so the tank overfills.

So for now, I just have good steady flow out of the heads, but it doesn't compare to the flow out of a PH . I assumed one of the benefits of having a sump, was that I could remove a couple powerheads from the tank. So now, I just have two more pumps in my tank water, creating heat (return pump and New Simmer )

Sorry for the confusion. Make any more sense now? :?

By the way, i am WAY impressed with my Nautilus Skimmer. Everyone told me it wasn't very sturdy and it was cheaply made. But it was the best $135 I've spent on my tank YET! 8)