How many power heads to get?

rolikesfish · 08/13/2010, 09:29 PM

Well I am upgrading to a 40 gallon soon, and I want to put in two power heads into my display tank. I would put them at the top right and top left of the tank and point them downwards to make an "X" shaped flow. I am thinking about getting 2 Hydor Koralia Evolution 750 gph. Too much flow? Too little flow?

mike_cmu04 · 08/13/2010, 09:44 PM

it depends on your corals you intend to keep but That should be good i would get a 3 or 4 though then you wont need to upgrade later

dots · 08/13/2010, 10:43 PM

It does depend and overtime your needs may change. Those flow rates you listed give a turnover of 37.5X, which is a good starting point.

mikid · 08/14/2010, 11:10 AM

also,i would recommand you put them in the top corners,one pointing to rear one to front to cause a circular flow pattern.....2 #4 evos would work fine....my 120 has 4 #4 evos in a circular pattern.....great flow

Saltwatercoral2 · 08/14/2010, 11:45 AM

I have 2 #4 EVo's in my 110, there is lots of flow!. I have also been thinking about adding another on the back

Gold Stripe · 08/14/2010, 11:51 AM

I have 2 750s in my 65 and it is just fine. 65 and 40 have the same footprint.

08/13/2010, 09:29 PM	#1
rolikesfish Registered Member Join Date: Aug 2010 Posts: 137	How many power heads to get? Well I am upgrading to a 40 gallon soon, and I want to put in two power heads into my display tank. I would put them at the top right and top left of the tank and point them downwards to make an "X" shaped flow. I am thinking about getting 2 Hydor Koralia Evolution 750 gph. Too much flow? Too little flow?

08/13/2010, 10:43 PM	#3
dots Registered Member Join Date: Nov 2004 Location: Sacramento, CA Posts: 6,258	It does depend and overtime your needs may change. Those flow rates you listed give a turnover of 37.5X, which is a good starting point. __________________ ~Doug

08/14/2010, 11:51 AM	#6
Gold Stripe Registered Member Join Date: Aug 2004 Posts: 977	I have 2 750s in my 65 and it is just fine. 65 and 40 have the same footprint. __________________ I swear its the last coral I will buy honey ...... I promise!

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08/13/2010, 09:44 PM	#2
mike_cmu04 Registered Member Join Date: Oct 2005 Location: Shepherd, Mi Posts: 2,348	it depends on your corals you intend to keep but That should be good i would get a 3 or 4 though then you wont need to upgrade later

08/14/2010, 11:10 AM	#4
mikid Registered Member Join Date: Apr 2007 Location: fair oaks,california Posts: 1,767	flow also,i would recommand you put them in the top corners,one pointing to rear one to front to cause a circular flow pattern.....2 #4 evos would work fine....my 120 has 4 #4 evos in a circular pattern.....great flow __________________ Mike Dickenson....Marine Aquarist Roundtable of Sacramento, Co-Founder Current Tank Info: 187 Gal Display/125 Gal sump/Reefkeeper Elite/Rw20s/Leds

08/14/2010, 11:45 AM	#5
Saltwatercoral2 Registered Member Join Date: Mar 2010 Posts: 1,617	I have 2 #4 EVo's in my 110, there is lots of flow!. I have also been thinking about adding another on the back