S smokin Feeder Fish MFK Member Nov 4, 2008 145 0 0 hershey pa Jan 22, 2009 #1 when the pump says how many gph is that at the maximum head height? any1
S smokin Feeder Fish MFK Member Nov 4, 2008 145 0 0 hershey pa Jan 22, 2009 #2 k so i read the sticky bout pumps. how many extra gph should i get the pump so it pumps 6 feet high?
D Dr Joe Feeder Fish MFK Member Mar 8, 2006 10,664 9 0 73 Sixty Miles South of Tampa Florida Jan 22, 2009 #3 Completely depends on the pumps efficiency. Calculate the rate of flow you need @ the height you need, add a little for filter restrictions (especially when dirty) and then select a pump by that. Pumps are rated for maximum flow @ zero head . The manufacture should post a chart showing flow @ different head heights. Like this one from Iwaki http://www.marineandreef.com/v/vspfiles/V4_Backup/pictures/Iwaki_PC_WMD20RLT.jpg If it's a cheap pump and no website info, it may be in the box. And powerheads are different from pumps as they are just designed to move water, not lift it. Dr Joe .
Completely depends on the pumps efficiency. Calculate the rate of flow you need @ the height you need, add a little for filter restrictions (especially when dirty) and then select a pump by that. Pumps are rated for maximum flow @ zero head . The manufacture should post a chart showing flow @ different head heights. Like this one from Iwaki http://www.marineandreef.com/v/vspfiles/V4_Backup/pictures/Iwaki_PC_WMD20RLT.jpg If it's a cheap pump and no website info, it may be in the box. And powerheads are different from pumps as they are just designed to move water, not lift it. Dr Joe .