Powerheads, is there ever too much flow?

S

Statman

AC Members
Nov 3, 2004
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My tank is 120 gallons, I dont have the dimensions in front of me but I know its 6 feet long, cant remember the height or depth. Anyway Im for sure getting a Koralia #4 for the left and right sides of the tank. Im also considering put either 1 or 2 #3's (or #2's if a better idea) on the back wall facing the front of the tank.
First, is this too much?
Second, I dont recall ever seening powerheads on the back wall facing the front. Is there a reason for that? Is it not a good idea?

Thanks ;]
 
I've seen Powerheads on the back wall.. And in quite a few tanks I've looked at. In fact I have one on my back wall as well. But I agree with Grins in that if you are going to have an SPS tank I've heard that they actually do better with the uber increased flow rates.
 
Well gee...I'm beginning to think I have overkill! In a 37 gallon I have two Koralia #3's. Is that too much. The tank is fairly new so I have very few corals in it yet. However, it is basically a soft coral tank with a couple of fish. I have a canister filter and a skimmer also (no sump, etc.) Should I be worried that I have too much "flow?"
 
WELLLLLLL.

Most common suggestion is 20-40 X watervolume total turnover for a reef.

Now, if you go bare bottem, and wanna go sps, ive heard 40-60 X

then when i did research on the hole zoea-vit thing, they suggest a BB w/ 60-80X's.

i have 37 X in my tank, and im wantin more, but running out of room...

hmmmm, not really much of an answer....
 
I will be keeping corals, no idea what yet as that wont happen until next year when I can afford to invest in good lighting. I just didnt know if a #4 on either end would give enough flow to such a large area, so I thought a few smaller powerheads on the back wall in the middle would help out.
 
I wouldn't say there are too many people who went overkill. I am an admitted flow freak. I have over 150x turnover, totalling just over 10000 gph in my 75. I have plans on it being 90%+ sps dominated, however.
 
wow... 150x.. that is A LOT. Of course, can't compete with ocean currents.. but gotta be getting close.

On my 60G it has returns on both ends, each one split with loc-line spray arms as well as a closed loop setup on the back wall with 2 returns. I plan on having 60-70x turnover on that tank.

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