| What kind of odd behavior are you seeing?
As a helpful hint that many dealers fail to inform you of when purchasing fish I should point out that simply floating the bag for 15 minutes to get the temp equal to your tank is not really enough. Floating the bag will bring the temp into equilibrium with your tank but it does nothing for acclimating your new fish to their new environment. The pH, alkalinity, and nutrient levels of the tank they came from at the LFS are not usually the same as would be found in your tank. Sudden changes in the water chemistry are stressful to fish, especially where pH is concerned. When you simply pour the fish into a new environment that they have not been conditioned to they can display odd behavior as a result of the stress impact. Some of this behavior comes in the form of hovering at the top of the tank and not moving very often or fast (this is shock), erratic or jerky swimming behavior, failure to accept food right away, and the always ever-telling floaters who could simply not take any more stress and they keel over and call it quits.
The proper way to acclimate new livestock is to first float the bag for 15 minutes to slowly bring the temperature within range. Next, open the bag and spoon in about 1/4 cup of the water from your aquarium into the bag and let it sit for about 5-10 minutes. Repeat this process over again about 4 or 5 times. After an hour of this slow acclimation the fish will have adapted themselves to your tanks parameters and it is safe to place them into your tank.
__________________ "The only thing that happens fast in saltwater tanks is failure."
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