Plumbing DT Question Need HELP

[Titobattilocchi]

NEW TANK BUILD
So my main pump has a 2 inch in let from the sump and a 1 1/2 return to DT.
My DT only has two 3/4 inch returns on it, not sure if its safe to down size that much and if it is going to restrict the amount of flow. How should I go about pluming it or do I need to get a different pump would like to use this one if possible, to much of a pain to send other one back? Planning on hooking up UV to it witch has 3/4 inch in and out outlets. Was thinking about running 1 1/2 to a manifold then coming off from that with some 3/4inch connections for reactors and one 3/4 inch to UV then two 3/4 inch on the out put of the UV to the 2 returns on the DT. Im trying to keep the UV where all water that passes through the sump has to go through the UV before returning to DT.

What do you guys think or other plumbing options THANKS

 

[Duvallj]

When I first setup my 180 marineland tank with a dc10000II pump (also 1 1/2" out) I just put a T that went from 1-1/2 to two 3/4 without any problems. I eventually went to a herbie setup and changed to the 1-1/2 to a t that goes to two 1" outputs that go over the back of the tank. I didn't notice a change in flow. So I'm sure you could go with the manifold idea.

How much flow are you pushing through your return? UV works best at certain flow rates. Too much flow and you don't have enough contact time. The easiest way to insure both is two Uv's on each 3/4 after the pump output is split.

In the end I would look at the flow rates that you want for the return and how much the uv can handle. If it isn't much you might be able to run the manifold with one 3/4 with the bulk of the return flow. If not you may want to stick with two 3/4 and revisit the uv situation.

 

[4fishman]

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T^o ease your concern, consider the area of 2, 3/4" return opening versus the single 1-1/2" main pipe. There is only a 15% reduction in area and for that to occur for such a short amount of pipe will not reduce your flow.

 

[Titobattilocchi]

My uv requires 1200 gph witch is what my return will be so that's why I want to place a t or two returns after the uv.