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Discussion Starter · #1 ·
Hello, I am running pressurized CO2, and have removed many of the old fish (some ratty old platys) and have some Cherry Red Shrimp, three otos and a platy. Plants have been doing well, but had to adjust (reduce) the CO2 when I first went pressurized, fish were acting "weird". Not at top looking for O2, but swimming around moss swimming into substrate, etc.

Dialed down the CO2, fish were ok, then inched it up slowly, plants started pearling, and fish were fine....

But now I have added 10 panda tetras tonight, they were all around the surface, at first I thought they were hungry, then it dawned on me!!! They were probably not used to a CO2 tank....so what is the process when adding fish? I have added fish before, but never had pressurized CO2 to deal with, do you always dial it down when adding fish, until they get acclimated?

I have a CO2 drop checker, it is green....

Thanks!!!
 

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This is what I'll do when introducing new fishes into tank.

1) Place the whole bag into your tank for about 30 minutes (equalise temperature)
2) Add your tank water into the plastic bag in small amount and let the new fish itself acclimatise. This should last about another 40 minutes(interval of 10 minutes).
3) By this time, the plastic should have at least 50% of your tank water and the rest from the LFS.
4) Tilt the plastic bag opening fully horizontally and let the fish swim out when they are ready for the new enviroment. Don't rush them! If the fish swim out immediately, this show that your water perimeter is better than the LFS and vice versa. I have been using this method since 10 years ago when I was into Arowana.

Hope this helps.

K.C
 

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I use a drip-acclimation method; I put a bit of Prime in the bottom of a bucket (this is to detox ammonia/nitrites that may be high in the bag water, especially when receiving mail order fish), pour in a cup of tank water (get some quick surface agitation to make sure the O2 doesn't bottom out), and then get a slow drip siphon going and let the water params equalize for a few hours. Then I net the fish and add them to the tank.

If you're adding them to a CO2-injected tank, I'd drop down the CO2 for a few days and slowly increase back up just like you did last time around.
 

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Discussion Starter · #4 ·
If you're adding them to a CO2-injected tank, I'd drop down the CO2 for a few days and slowly increase back up just like you did last time around.
Thanks, this is what I was really getting at. I ended up turning of CO2, and they seemed to be doing better, (not swimming at the surface at least)

I am slowly inching it up again!

:thumbsup:
 
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