How much flow for a tops 300 gallon tank?

[CrAzY cOrAlS]

Ok so im in a middle of a upgrade and i have a reeflo snapper, and was wondering would this be good for a 300 gallon? its 2400 gph return pump, but i was wondering on going to a dart and use a manifold this time around i always had a seperate pump for each thing, reactors,cal reactor,skimmer,chiller and i felt ity was a huge waste so my ? is would a dart return pump be able to handle all this? its about a 3400 gph return pump. any info would be very helpful and thank you.

 

[Bob 1000]

6500gph that's what I run.. My pump runs my skimmer and 6 returns to the tank.. I'll be selling my pump on wednesday this week and the plumbing..

 

[pecan2phat]

You need to also calculate all the head restriction loss when these pumps are not pure circulation use only.
An example would be when I ran a Dart through a closed loop which for all purposes is a pure circulation scenerio. Add on all the 90 degree elbows and an Oceans Motions 4-Way and my estimated output flow dropped 1000 gph from the 3600 gph at 0' head.
Putting these pumps through a manifold will decrease the output as well.

 

[Bob 1000]

Exactly what Pecan said that's why I run the 6500, or it may be 7200 sequence pump..

 

[NYreefNoob]

ive never really counted on return for flow in my tank and not huge on a ton of flow through the sump, my return is only coming back at about 400 gph of course i have alot smaller tank but use a gen x pc 40 to run my carbon and phos rector and return goes hrough my chiller and uv , having the chiller return straight to tank helps cause one less output and less on the manifold, also not running a alcium reactor and my recirc skimmer is feed by a mj 1200

 

[reefs4life]

I run a Reeflo Hammerehead rated at about 5800gph+ for my system. I built a manifold all out of 1-1/2' pvc with 5 outputs. 2 of them go to my 210, I goes to a 20G, the other goes to a 30G and the 5th one isn't really in use as of right now.