Tunze Recirculation Pump/Powerhead Silence 1073.020 performance issues

[r-balljunkie]

Wow,

Just swapped out my mag 5 for this pump. Stated performance for mag 5 is 475-500 gph @45 watts.

I thought I would try out the tunze pumps, and with stated performance of 634 gph @ 30W, I was going to tap off the discharge and run my carbon reactor.

Pumping height is approx 45”

End of the day, I don’t think the tunze pumps puts out near as much flow as the mag5. There go's that plan. I am happy with the pumps performance, it is indeed quiet, but must say, flow is a different issue. The mag5 is a stronger pump, flow wise.

Kind of threw a monkey wrench in my overall justification of purchasing this pump, to get rid of 2 pumps, and decrease my overall power consummation for the tank.

I will keep it, but wanted to table for discussion, and know if anyone else ran into this situation.


Chuck

 

[rvitko]

The 1073.020 has a sharp drop off due to head pressure. The Mag 5 is a higher head pressure pump. 1073.02 is only producing about 190gph at 5ft. Basically, at 0 head the 1073.02 has more flow but it has a sharper drop off due to head pressure.

 

[Maximus]

Roger, can you tell me what the output is on the .02 with 3ft of head pressure? If it's too strong for my Algae Turf Scrubber, is there a way to dial it down? Thanks.

 

[r-balljunkie]

6 year old thread...sweet bump

 

[Maximus]

6 year old thread...sweet bump

Haha, I'm glad your still reefing!:lmao:

 

[rvitko]

It would be about 330 gph, however every 90 degree elbow adds a foot as a general rule of thumb and that flow rate is at 39.4" (1 meter). You can turn it down, on the intake is a flow adjustment.

 

[Maximus]

Thanks Roger. I need to run around 200-250 gph at first on the ATS. Is the flow adjustment the circular bottom piece that you twist?

 

[rvitko]

Correct and even one more foot or elbow would drop it to 225, it drops quickly after 3 feet.

 

[Maximus]

Sounds good. Just ordered one from MD. One more thing, what size hose does it accept on the output nozzle? Thanks Roger!

 

[rvitko]

The fitting has a stepped barb that excepts 5/8 and 3/4" tubing.

 

[Maximus]

Sounds good. Thanks Roger!

 

[Rakie]

So another sweet bump for this thread and question to Roger @rvitko --

Would having a small nozzle at the end of the pump increase head pressure in the return line?

I'm not sure about how head pressure works -- My thoughts are (out of curiosity) i'll either get better performance with a LARGER diameter return line, or, a SMALLER diameter return line.

I just don't know which would give better performance.

I've got about a 3' run to my tank using all flex tubing if that helps.

 

[rvitko]

It may make a very marginal difference, it is hard to say, in general if you need more flow or head pressure the best solution is a bigger pump, as the restriction in theory could marginal increase head pressure for a distance but past that distance the resistance will likely lower head pressure. This is something that would be trial and error and we have not tested.