GPH on powerhead

psilentchild · 02/10/2009, 10:34 PM

How does the gph for powerhead work? I have 2 koralia 3 for my 72 gallon. The gph on it is 850 gallon. So I was wondering what gph I would need or my 440 gallon

fender4string · 02/11/2009, 02:18 PM

You're gonna need at least 20x turnover in your tank. Some of that comes from the sump. Say your return pump accounts for 5x (440 times 5 is 2200) total turnover. That leaves you with an additional 15x to get to the full, minimum 20x turnover. 440 multiplied by 15 equals 6600 gph. 2200 plus 6600 equals 8800 gph total turnover (or 20 times total turnover) That's really all there is to it. Hopefully that's what you were asking?

jmccown · 02/11/2009, 03:33 PM

Get a couple K8's and you'll be amazed. These things flow like crazy! I have 1 in my 380g along with a K4 and have plenty. It is an 8' tank flowing all the way across.

psilentchild · 02/11/2009, 03:35 PM

Yes that's what I was asking. Thanks

psilentchild · 02/11/2009, 03:39 PM

K8? Are you talking about koraila? What is it rated at? I was thinking about getting 3 korailla 3 or 4

jmccown · 02/11/2009, 03:46 PM

Yes, the new Koralia Magnums. The K8 is ~3200gph. It is a good wide flow pattern as well.

02/10/2009, 10:34 PM	#1
psilentchild Registered Member Join Date: May 2007 Location: Horn Lake Posts: 1,665	GPH on powerhead How does the gph for powerhead work? I have 2 koralia 3 for my 72 gallon. The gph on it is 850 gallon. So I was wondering what gph I would need or my 440 gallon

02/11/2009, 03:33 PM	#3
jmccown Registered Member Join Date: May 2005 Location: Northport, Alabama Posts: 3,185	Get a couple K8's and you'll be amazed. These things flow like crazy! I have 1 in my 380g along with a K4 and have plenty. It is an 8' tank flowing all the way across. __________________ "When I die, my biggest fear is that my wife sells all my toys for what I TOLD HER I paid for them" Former member of the "Huge tank club" Current Tank Info: 300 Deep Dimension FOWLR

02/11/2009, 03:46 PM	#6
jmccown Registered Member Join Date: May 2005 Location: Northport, Alabama Posts: 3,185	Yes, the new Koralia Magnums. The K8 is ~3200gph. It is a good wide flow pattern as well. __________________ "When I die, my biggest fear is that my wife sells all my toys for what I TOLD HER I paid for them" Former member of the "Huge tank club" Current Tank Info: 300 Deep Dimension FOWLR

02/11/2009, 02:18 PM	#2
fender4string Registered Member Join Date: Aug 2008 Location: Novi, MI Posts: 1,550	You're gonna need at least 20x turnover in your tank. Some of that comes from the sump. Say your return pump accounts for 5x (440 times 5 is 2200) total turnover. That leaves you with an additional 15x to get to the full, minimum 20x turnover. 440 multiplied by 15 equals 6600 gph. 2200 plus 6600 equals 8800 gph total turnover (or 20 times total turnover) That's really all there is to it. Hopefully that's what you were asking?

02/11/2009, 03:35 PM	#4
psilentchild Registered Member Join Date: May 2007 Location: Horn Lake Posts: 1,665	Yes that's what I was asking. Thanks

02/11/2009, 03:39 PM	#5
psilentchild Registered Member Join Date: May 2007 Location: Horn Lake Posts: 1,665	K8? Are you talking about koraila? What is it rated at? I was thinking about getting 3 korailla 3 or 4