return pump for 180g-200g

I second the Velocity T4. Just switched it out from a Panworld 100PX-X and the difference was amazing in the noise level. I can hardly hear the T4 running. I am using the T4 on my 180. Great little pump. Nice and quiet, and the flow is just right after head loss. I have not noticed much in extra added heat to cause any problems. I believe the Poseidon PS-4 Titanium pump is the same pump with a different name now. My T4 has 3/4" MPT threaded input and outputs. I see that some of these pumps have barbed nipple connections to accept vinyl hose which are not desirable by some people though.
 
I am also having a difficult time deciding on a return pump for my 280. I am thinking of approx. 1200 gph flow through the sump. The velocity T4 is a possibility. What about a Sequence Tarpon or Wahoo? I like the dart but am afraid it is just too much pump.

Any advice?
 
Not sure about other brands, but i do know you can valve down Sequence pumps and doesnt add xtra wear to them....like i mentioned earlier i am using the Hammerhead on a 200gal...figure to run 2-3kgal return and its also split to run a uv, chiller, and refuge.
 
jond-
I run a Tarpon on my basement sump for a 125. The same pump would probably be good for your size tank under the stand. It is large tho 18"x8" footprint. The snapper is smaller and may work well for your application.
 
Thanks. Does anyone know how much you can restrict a Dart by valving it down? It would be nice to have the flexibility, but I am not sure if backing it down to 1200 gph is too extreme.
 
look at blue line hd 40x,gph,poewr consumption and reliability is hard to beat for a 140 dollars.i use them on all my systems and i love them
 
they publish their output vs energy curves...they will show you if its where you want to be or not
 
what if someone uses a small return pump and hence not much flow in the sump, but keeps the main tank strongly circulated. Is this good or bad?
 
there is a school of thought that supports low flo sumps with very high efficiency protein skimming and macro algae usually.processing nutrients as opposed to removing nutrients.i personally like to match the skimmer to the flow through the sump.
 
Using this chart to figure out the darts performance per watt
http://www.marinedepot.com/aquarium...merhead_manta_ray_tiger_shark_information.asp
you can see that at about 1200gph on the dart your using about 145 watts, this is like 8 gallons/watt VS the blueline hd40 that is rated at 790gph at 120 watts you get about 6 gallons/watt.

The dart looks to be more effecient then the bluelines plus you have the option to increase flow with the Dart. The most watts you will see out of a Dart is roughly 160 watts at around 2000 gph this is about 12 galloons per watt so even though the power has increased, the effeciency also increased.

The blueline 40 will also loose flow due to head preasure.

I am the middle of setting up my 180 and just found out tonight my mag 24 which i had planned on using (had pump for a few years) broke the impleller shaft and punctioned inside the magnetic housing while in my live rock bin, so I am also looking for a good effeicient pump and the dart or even the snapper both look to be the best bet.
 
the blue line i was talking about is the hd40x which is 1200 gph i believe or more.it is more efficient than a dart i also believe.wisper quiet and cheap.used them 5 years without failure on 3 different systems.IMO its the pump i would use
 
Ok my mistake didnt notice the x. The HDx is rated at 1270 gph @ 0ft with 130 watts, this would put it just under 13 gallons/watt. Note though at 6ft return the pump pushes only 900 gph, so if 1000+ gph flow is what your looking for this pump still won't compete but it is effecient (needs to be an X line though).

here is a site that has a graph of their flow rates and watt used and such for the various blueline pumps.

http://www.saltycritter.com/pumps/blueline-panworld-pumps.htm

One thing with the x lines is they lose alot of flow with more head preasure.

A snapper can do a little more then 1300 gph at about 8 ft of head preasure using only around 100 watts or 13 gallons per watt at that flow rate. @ 0ft of head preasure the snapper runs at 2700gph at 90 watts, thats 30 gallons/watt. MAX wattage listed for the snapper is 110w.

So even throtteled down to the desired flow flow rate the snapper still performs the same 40HD-x(running with 0ft headpreasure) with effeciency and is able to perform the flow rate on at the typical headpreasure you will see on a return system(the HD40X only does under 900 gph at 8ft of headpreasure).

Sequence home page that has some graphs.
http://www.reeflopumps.com/flowbiasedpumps.html

Using the first link you can find prices on both the 40HDX and snapper the snapper is only a 30 dollars more. For the little extra you have the option of future expansion of your plumbing plus you don't have to pay extra costs of electricity with the snapper.
 
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