3600gph manifold

[graphixx22]

I am getting ready to put a manifold on my tank. the tank is 6foot across. I am going to have 5 ports on the front and the back of the tank. this will be plumbed in 1 inch PVC.
the question I have...... will a 3600gph pump be enough to get some good movement into the tank????? I cannot do an external pump that is out of the question. and 3600gph mag drive pump is the largest I can find at a decent price. so once again would this be enough pump or does anybody have an idea where to find a larger submersible pump.
thanks I appreciate the help.

 

[graphixx22]

bump

 

[Iammatt219]

aquaticeco has some big submersible pumps but they also cost more both to purchase and run

 

[sjm817]

You are going to run 3600 GPH through a sump, or a closed loop? Also, 1" PVC is way too small for that much flow.

 

[reefkoi]

<a href=showthread.php?s=&postid=9033520#post9033520 target=_blank>Originally posted</a> by sjm817
You are going to run 3600 GPH through a sump, or a closed loop? Also, 1" PVC is way too small for that much flow.

I disagree, if you use 1" pipe with 5 outlets on 3600 g.p.h. you'll be just fine I am sure the pump outlet is no larger than 1" on a submersible. I have a 6-outlet manifold with 1" outs, it does go 1.5" into the manifold from the pump, but its a 5800 gph hammerhead pump. works perfect, and 3600 divided by 5 =720gph per outlet when you look at it this way thats not excessive for 1" pipe, factor in some elbows, pipe length, head press, you may be only getting 500 gph at each return realistically.
Thats no problem for 1" in fact 3/4" would suffice.

 

[jakano]

I agree with reefkoi. I run a 3/4" manifold with 1/2" locline at the ends with a dart. I have 8 ports running at all times and have wonderful random flow that doesnt blast any of my corals to hard to damage them. I do however recommend againt running that big of a submersible pump through the sump. It is a massive amount of flow and I think you will have a lot of micro bubble problems. Why is an external pump out of the question? For the price of a mag 36 you can find a slightly used dart and have the same flow with far less heat put into the water and much less trouble.

 

[joeycadre]

i'm putting a dart on my new 90 and will have 3 3/4" returns and a 1" sea swirl running off of it. so you shouldn't have any problems.

as to whether or not it's enough flow depends on what you plan to keep in the tank.

 

[frank2926]

http://reefcentral.com/calc/hlc2.ph...Couplings=0&CheckValves=0&Exits=1&Entrances=1

 

[sjm817]

You are supposed to double the output size on a Mag. This would be 2" for a Mag36. 1" is good for a Mag7. Even a Mag9 needs 1.5" to flow decently.

 

[graphixx22]

an external pump is not out of the question. I just dont want to drill the sump but after some research I think that is what is going to happen. I am looking at the sequence hammerhead external. I will come out 1.5" out of the pump and "T" off and go to the front and back of the tank where it will go to 5 outlets on both front and back. so roughly without calculating loss looking at approx 580 gph through each outlet. I think that should put some good flow in the tank. any comments???

 

[sjm817]

When you are using a big flow pump like that, an external is a much better way to go.

I would not put that much flow through a sump.

 

[reefkoi]

yeah your new idea sounds much better. drilling the sump will be easy, just get the water out of it for a few minutes. unless you have a big sump and large pipe going into the sump from the tank (2" minimum) the hammerhead will drain it pretty fast though.

 

[jmait769]

Will your tank drain 3600 GPH? If not I think you will overflow the tank. IMO I think a closed loop would be better. I wish I had a pump that large for my closed loop!

Jay