Too much CO2! How to get the levels down? - The Planted Tank Forum

 
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post #1 of 10 (permalink) Old 03-31-2013, 04:38 PM Thread Starter
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Too much CO2! How to get the levels down?

Im just getting my CO2 going and I think I put way to much in it. I was in bed and my GF noticed my gourami was dark, I got up and saw all the fish at the surface so I shut the CO2 off and used a hose to blow some air in the water. Should I do anything else? I dont think Im going to loose any fish but I want to get it back to safe levels so the fish arnt so stressed.


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Nick
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post #2 of 10 (permalink) Old 03-31-2013, 04:58 PM
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Increase water surface movement. Sometimes taking 2-3 inches of water from the current level will allow filtration to "drop" instead of "flow", oxigenating the water and also allowing CO2 to get out.
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post #3 of 10 (permalink) Old 03-31-2013, 05:03 PM Thread Starter
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ahh yea great idea, I didnt think of that. Just did it, thanks man!
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post #4 of 10 (permalink) Old 03-31-2013, 05:24 PM
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Re: Too much CO2! How to get the levels down?

Yeah, add a bubbler and air pump. The bubbles will remove co2 pretty fast.

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post #5 of 10 (permalink) Old 03-31-2013, 05:31 PM
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You will gas your fish when learning CO2. But your losses may vary.


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post #6 of 10 (permalink) Old 03-31-2013, 08:21 PM
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Quote:
Originally Posted by ThatGuyWithTheFish View Post
You will gas your fish when learning CO2. But your losses may vary.
There's absolutely no need to gas your fish. Plenty of oxygenation via surface agitation and good circulation with very gradual adjustment of CO2 will prevent it.
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post #7 of 10 (permalink) Old 03-31-2013, 10:00 PM Thread Starter
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I just had the needle valve open way too much, all of this happened in like 30 minutes. I set up the CO2 last night and ran it for an hour or so then turned it off and this morning it turned on at with the lights and within 30-45 minutes my GF noticed my Gourami was much darker than normal and I got out of bed and noticed all the fish at the surface so I knew it was the CO2. Turned it off, drained some water to get the agitation up and now all is well.
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post #8 of 10 (permalink) Old 04-01-2013, 02:11 AM
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Quote:
Originally Posted by Jeff5614 View Post
There's absolutely no need to gas your fish. Plenty of oxygenation via surface agitation and good circulation with very gradual adjustment of CO2 will prevent it.
This. Slowly ramp up instead of blasting it out of the gate then dialing back.
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post #9 of 10 (permalink) Old 04-01-2013, 02:17 AM
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Just to add about not gassing fish. Not to say I haven't come home to fish gasping but now that I am familiar with CO2, it's not that hard. However, it may take me 2-3 weeks to get everything dialed in, depending on how busy I am. I never adjust CO2 when I can't be their to check on things. That is atleast 5 hours per adjustment, I like to have more. Then make very small adjustments over time. Eventually you will find the balance without any harm to your livestock.

You may find them stressed at a certain level at first but find they adapt and you can go higher, sometimes quite a bit. That's why it can take so long.
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post #10 of 10 (permalink) Old 04-01-2013, 02:38 AM
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should you run as much co2 as possible, without causing the fish distress?
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