sandy001 Posted December 29, 2005 Share Posted December 29, 2005 I am setting up an a above tank trickle filter for a 300ltr tank. I need a powerhead/pump to pump about 1200 ltr/hr with a 2ft lift I am assuming I need a pump rated at 2000ltr/hr. Would like a fairly compact design so I thought a powerhead would be better. I am not real sure of the difference between a powerhead and a submersible pump except powerheads seem to be more compact. Wondering if anyone was using or new of a powerhead that would suit this application & what brand and model it was. Thank's Dave Link to comment Share on other sites More sharing options...
D6C1 Posted December 29, 2005 Share Posted December 29, 2005 My understanding is that powerheads are not supposed to have that back pressure on them, hence the pumps. Im sure someone would be able to advice you better, but thats my belief Link to comment Share on other sites More sharing options...
wui39 Posted December 29, 2005 Share Posted December 29, 2005 Powerheads generally have a large amount of water movement at a low pumping height. Pumps move more towards height and sump pumps are generally all about height. I would recommend a proper pump in your case. Link to comment Share on other sites More sharing options...
Eddie Salita Posted December 30, 2005 Share Posted December 30, 2005 I may be wrong,. but I have always thought that pumps are essentially powerheads with higher wattage motors, and maybe a little less clearance around the impellor. So if you took a powerhead and put a higher wattage motor on that powerhead, it would pump to a higher head, or push more weight of water better, but at zero head it would push the same volume of water, because the rpm is basically the same........ Just my little theory anyway..... so I'm sharing..... Cheers, Jason Link to comment Share on other sites More sharing options...
sandy001 Posted December 30, 2005 Author Share Posted December 30, 2005 Thank's All Think I will use a 2000ltr/hr pump. Cheer's Dave Link to comment Share on other sites More sharing options...
duck Posted December 30, 2005 Share Posted December 30, 2005 i tried with tota 2300lph powerhead with <1m head and it moves almost nothing!!! maybe different powerhead built differently.... Link to comment Share on other sites More sharing options...
Ash Posted December 30, 2005 Share Posted December 30, 2005 From personal experience, powerheads don't work too well with any head height whatsoever - their flow drops off dramatically to about nothing at ~1m I'd like to know the exact differences, but what Jason said makes sense - impellor/housing design & probably more torque at the same operating RPM. Link to comment Share on other sites More sharing options...
Colfish Posted December 30, 2005 Share Posted December 30, 2005 i use a rio 2100 lph p/h to fill my tanks,@ 2m head. it works, and has for yrs a 2100 lph pump would stir up the substrate to much. just my p/o. cheers Link to comment Share on other sites More sharing options...
wui39 Posted December 30, 2005 Share Posted December 30, 2005 Forgot to add a lot of it also depends on the impeller design. Certain types seem to suit different functions. The internal winding of the "cage" would also be a contributing factor, but that's getting too technical, might be easier to stick with the rule that powerheads move water, fountain pumps move height. Link to comment Share on other sites More sharing options...
sycho zebra Posted January 4, 2006 Share Posted January 4, 2006 IMO you need a submersible pump, yes powerheads are generally more compact but try an eheim 1060/1260 they flow between 2200-2400lph (i'm pretty sure the 1060 in now supreseded by the 1260) as they have quite a strong flow Link to comment Share on other sites More sharing options...
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