Hello,
I want to switch from my AM1000 reactor to an external needle wheel pump. The idea of an external needle wheel pump is attractive (to me) because you can hook the pump output to loc-line Ys etc. that distribute CO2. I see this as one advantage of an external needle wheel pump - it seems to offer more options of co2 distribution.
But - I have gotten the impression that external needle wheel pumps have crappy flow, especially at any head. For example (from my estimations), the Eheim needle wheel pump touts:
712 gph at zero head, which drops to sucko levels of
396 gph at 3.3ft head
316 gph at 4.1ft head
If, as in my case, I really do want a NW pump that can drive water through a few 90 degree elbows, up 4ft of head, and then through another split to one left and one right loc-line Ys that dump co2 enriched water into my 90gal tank -- 300-400gph ain't going to do it. Right now, my [HASHTAG]#1260[/HASHTAG] Eheim hobby pump (635gph) that drives the reactor provides "OK" flow out of the loc-line heads.
QUESTION:
What are the options?
I seek an external NW pump with good flow, moderately quiet, and strong reputation for quality (NO,repeat, NO LEAKS).
There is progressive interest in NW for co2 delivery. But I don't see (as much) corresponding discussion of external NW pumps. Am I missing something or are there just not that many decent options yet?
I'd welcome any input. When I found out Eheim had an external NW pump I thought that would be great. Then discovering the low flow and reading other comments that some of the other available external NW pumps are of "low" quality was a bummer.
thanks,
growitnow
good external pump needle wheel thread - compares Danner and others
http://www.plantedtank.net/forums/e...eel-co2-diffusion-fractionating-impeller.html
External Eheim needle wheel pump not strong enough:
http://www.plantedtank.net/forums/equipment/101142-eheim-needle-wheel-pump-problems-updated.html
External Eheim needle wheel pump:
http://premiumaquatics.com/aquatic-supplies/EH-1103220.html
External Danner needle wheel pump:
http://www.marinedepot.com/Danner_M...ter_Pumps-Danner_Mfg.-DN1159-FIWPSBUF-vi.html
I want to switch from my AM1000 reactor to an external needle wheel pump. The idea of an external needle wheel pump is attractive (to me) because you can hook the pump output to loc-line Ys etc. that distribute CO2. I see this as one advantage of an external needle wheel pump - it seems to offer more options of co2 distribution.
But - I have gotten the impression that external needle wheel pumps have crappy flow, especially at any head. For example (from my estimations), the Eheim needle wheel pump touts:
712 gph at zero head, which drops to sucko levels of
396 gph at 3.3ft head
316 gph at 4.1ft head
If, as in my case, I really do want a NW pump that can drive water through a few 90 degree elbows, up 4ft of head, and then through another split to one left and one right loc-line Ys that dump co2 enriched water into my 90gal tank -- 300-400gph ain't going to do it. Right now, my [HASHTAG]#1260[/HASHTAG] Eheim hobby pump (635gph) that drives the reactor provides "OK" flow out of the loc-line heads.
QUESTION:
What are the options?
I seek an external NW pump with good flow, moderately quiet, and strong reputation for quality (NO,repeat, NO LEAKS).
There is progressive interest in NW for co2 delivery. But I don't see (as much) corresponding discussion of external NW pumps. Am I missing something or are there just not that many decent options yet?
I'd welcome any input. When I found out Eheim had an external NW pump I thought that would be great. Then discovering the low flow and reading other comments that some of the other available external NW pumps are of "low" quality was a bummer.
thanks,
growitnow
good external pump needle wheel thread - compares Danner and others
http://www.plantedtank.net/forums/e...eel-co2-diffusion-fractionating-impeller.html
External Eheim needle wheel pump not strong enough:
http://www.plantedtank.net/forums/equipment/101142-eheim-needle-wheel-pump-problems-updated.html
External Eheim needle wheel pump:
http://premiumaquatics.com/aquatic-supplies/EH-1103220.html
External Danner needle wheel pump:
http://www.marinedepot.com/Danner_M...ter_Pumps-Danner_Mfg.-DN1159-FIWPSBUF-vi.html
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