Circulation

[marting83]

How much circulation does everyone use? I am currently using a Marineland 350 Magnum canister Pro w/ Bio-Wheels and was considering putting a powerhead in the two back corners on my 72 gallon SW (obviously not the 12SW or 20FW haha ). Opinions? or you can just vote.
Poll Explanation:
Use this formula: circulation (GPH) / tank size (gallons)

 

[10k]

If my calculations are correct 17.44 per hour, turn over.
125 gal AQA dual overflows
(1) Little Giant 3-mdqxc return pump (800 gal at 6ft)
(4) Maxi-Jet 1200 (295 gal/hr)
(1) Power Sweep 212 (125 gal/hr)
Yes, that is a Power Sweep. It's a pain to keep clean, but it mixes things up pretty good when it works. Keeps me from running my Tsunami, which doesn't cycle fast enough for my taste.
HTH

 

[dindi]

in my 75, one power sweep left high, on the right low is a rio 60 above that is a penguin ph with airhose to shoot bubbles along the back in a sincronized motion. Then there is the ecosystem, it shoots water along the surface. got rid of the fluval 404 w/spraybar (in the basement waiting just in case) I have no idea as to how much water is moving but it sure is keeping things going in my FO tank

 

[kimkissyfish]

Hi,
I dont understand this concept of t/o per hour?
I have a 404 fluval running
2 301 powerheads .. one on each side of tank facing into the middle towrd my new LR reef.
Oh and the backpack 2 with the blue stuff in it.
Is this enough?? How do I figure this out? I was thinking of buying the larger powerheads but i figured with 2 this should B ok. I didnt want TOO much current..
What are your thought??
Just put in 20 more pounds of LR (cured) today too..SO exciting!
Thanking you kindly, Kim

 

[marting83]

Ok, it's unanomous. Off I go to buy a couple power heads.
Kim,
In reguards to turnover, each of your water pumping devices has a GPH (gallons per hour) rating on it. A GPH rating specifies how many gallons that device can pump in 1 hour. You have a Hagan Fluval 404 @ 340GPH, 2 Hagan Aquaclear 301s @ 174GPH each, and a backback 2 @ 150GPH(?). Add the GPH ratings together = 838GPH. Now divide your GPH by the size of your tank: 838 / 75 = 11. 11 is your turnover. So, all the water in your aquarium goes through your filtration system 11 times in 1 hour. Look at the survey, you'll notice that's very good!

 

[marinemarty]

Hi, I run a 75 with 3 Maxi-jet 1200's, 1 power sweep 228, and use a Rio 3100 for return. This puts me around 20X. As far as i know as long as the sand does not get stirred up, you can not have enough circulation. HTH
Martin