Thoughts about water surface movement. - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 11-10-2003, 03:58 AM Thread Starter
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I was just thinking about the pros/cons of water movement and found a good way to think about it. It is like insurace (very basic, that is). A little or moderate amount it good, and just in case something happens (CO2 explosion or something), you'll have some sort of help to assist your recovery. If you have a lot, then you have to pay a lot (CO2 loss), but if anything ever happens, you'll probably be OK. If you have none, however, you won't have to pay anything, but, god forbid, should anything happen, there won't be much to help to at all, just like insurace! Just thought I'd share my own little thought...

-Tim

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post #2 of 4 (permalink) Old 11-10-2003, 12:38 PM
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While some might disagree with this logic, I agree with it. Especially for a beginner. When they ask if it will be ok to inject CO2 into the inlet of their Hang-On-Back power filter or should they get rid of the surface agitation, I tell them to just go for it. The gaseous exchange is easy insurance, and the worst thing that can happen is you waste some CO2 gas.

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post #3 of 4 (permalink) Old 11-10-2003, 04:48 PM
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While I don't disagree, your example (CO2 malfunction) only applies to pressurized CO2 users, or DIY in very small tanks. For those that don't use CO2 or use DIY in medium/bigger tanks, no surface agitation is still preferrable... I think.
In my 10 gal tank I let CO2 bubble into the inlet of an AC Mini, and the levels don't go up much, not because of surface movement, but because most is lost within the pump. With additional surface movement, there would be no CO2 increase at all.


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post #4 of 4 (permalink) Old 11-10-2003, 07:19 PM
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I neither agree nor disagree.
I have a CO2 controller on my setup.
I had some problems with my fish gasping in the morning hours before lights come on and ph would drop below the setpoint on the controller. To circumvent this I have the output of my 2 XP-3s about 3-4" below the surface, this causes just enough surface movement to allow the fish to breath easier in the morning. I'm sure CO2 usage has gone up a little, maybe 5 percent, but thats not bad considering the alternative.

Marcel
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