What are the long term effects of high Co2 exposure.

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thrillbillie12

Gambusia
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Jan 11, 2008
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Does any one know what the effects of long term Co2 levels are? I ask because I made a very large mistake with a DIY Co2 system. I had two 2 liter bottles with two cups of auger and a tablespoon of yeast. I had it plumed to its own air stone. I had read into the dangers of DIY Co2 and figured that for my 80 gallon, I would make a system that most people said was good for a twenty gallon tank. I figured that just a little Co2 for my plants was better than none. It worked great for about two months now, until I made a huge mistake. I took the Co2 off its own air stone, and plumed it into my main air stone that my air pump runs. I thought that this would help place the Co2 in the water better, boy was I right. It ran for most of the day and all night like that, I'd say on the upper part of 16 hours.

When I woke up yesterday morning, all of my fish were at the very top gasping for air. As soon as I saw my Cory cats and African knife swimming perfectly fine, all over the tank, my first thought was the Co2. Instantly I pulled the Co2 off and did about an 80% water change and turned the air pump to full blast. Before the wc was done with, most of the fish were back to the bottom and middle of the tank. I ended up losing my black ghost knife, but so far every body else seems to be fine.

My question is regarding the long term effects of my epic screw up. I plan on doing 50% wc every three days for the next two weeks, to me it seems like it might help with something. Are there any long term effects of long exposure to high levels of Co2?


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There aren't any.... basically the equivalent of holding your breath or being in high altitude for awhile. If they lived and they swim fine then you got lucky.

However the effects of inconsistent co2 can lead to algae problems, the severity will depend on your lighting levels. Just try to keep everything as stable as you can. No more wc are needed because you oxygenated the water column already with a bubbler and wc.




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Cheap way to decrease nitrates and keep your fish healthy: http://monsterfishkeepers.com/forums/showthread.php?t=504763
 
I think the other problem with high co2 is it drops pH. But that also should clear up with water change.
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Thanks for the replies guys. Your input has definitely put my mind at ease. I did all the test with my api master kit and everything was withen range. The only thing off was the oh was around 7.6. I did one last water change, waited an hour, and tested oh again. Was still a bit high but I added some ph down and hot it back into range.

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