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Old 03-20-2004, 12:53 PM   #1
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circulation

what is enough ? and is there such a thing as too much ?
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Old 03-20-2004, 04:52 PM   #2
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It depends on your setup I think.
For instance LR, and corals have different needs than a fish only which has different needs then a seahorse tank. That being said I think that there is definately a minimum or else you are going to have low DO. Why do you ask? Give us some tank info and I'm sure that there are some here that can help.
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In desperate need of help, but very excited to learn. I have tasted the world of aquariums and now I'm hooked.

Here is what I have now...

29 gal tank
aquaclear 200
prizm skimmer
maxijet 900 powerhead
100W (maybe 150W) heater, but heating isnt a prob
1.5 inches of crushed coral
some decoration stuff including a couple peices of old dried coral.) Not sure if it is real to be honest...
Crappy lights that I am going to rebuild, just for come flourescents
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Old 03-20-2004, 07:50 PM   #3
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With a 120 gal tank I would shoot for 1200-1600GPH flow rate in the tank. I would say 4000GPH would be to much for that size setup.
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Old 03-20-2004, 08:06 PM   #4
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Fishfreek,

While you are at it I was at big al's the other day and they tol me that I should shoot for 1000 gph but that sounded a little extreme to me. I was skeptical since I was standing next to the powerhead wall. I think that I have about 400 gph going and I am going to add another PH to bring that up to 600 or 650gph. Is that enough?

Thanks for your continued help in everything!
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In desperate need of help, but very excited to learn. I have tasted the world of aquariums and now I'm hooked.

Here is what I have now...

29 gal tank
aquaclear 200
prizm skimmer
maxijet 900 powerhead
100W (maybe 150W) heater, but heating isnt a prob
1.5 inches of crushed coral
some decoration stuff including a couple peices of old dried coral.) Not sure if it is real to be honest...
Crappy lights that I am going to rebuild, just for come flourescents
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Old 03-20-2004, 08:23 PM   #5
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The minimum recommended is 10x tank size...in your case, 290 gph. For a 120g, 1200 gph. I would think up to 30x tank size would be OK as we have members who have successful tanks with that amount of flow. One thing that bears mention is that most corals will do better with alternating flow. Although there are some species that will tolerate direct laminar flow all the time, a wave action is better if it can be achieved. If a wavemaker isn't in the budget, aim the powerheads so that their flow collides...that will help create turbulence.
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Old 03-20-2004, 08:27 PM   #6
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Let me give you an example of what I have in my tanks.

75Gal.
2 X Hagen 802
Mag 7.5 return pump at 5' head

80Gal.
Little giant 1300+GPH pump at 5' head producing close to 1100GPH flow rate
Maxijet 1200
Microjet

And I am thinking of getting a few more pumps for the 80.
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Old 03-20-2004, 08:46 PM   #7
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Allright, well it looks like I have passed the minimum at least so thats is good enough for me. I hope that next year we will be able to get a wavemaker, and hopefully get it over the net for a super good price. I am going to an aquarium auction tomorrow so I will see what they have got. I may have to sit on my hands to keep myself from bidding. Lol, need to keep the self-control.

Thanks for the help guys!
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In desperate need of help, but very excited to learn. I have tasted the world of aquariums and now I'm hooked.

Here is what I have now...

29 gal tank
aquaclear 200
prizm skimmer
maxijet 900 powerhead
100W (maybe 150W) heater, but heating isnt a prob
1.5 inches of crushed coral
some decoration stuff including a couple peices of old dried coral.) Not sure if it is real to be honest...
Crappy lights that I am going to rebuild, just for come flourescents
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