05-10-2012, 12:31 AM
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Darting around in short/sudden spurts is usually a sign of either poor healthy and/or poor water quality. Test your levels and consider a 10-20% water change.
Another reason might be mating. The fish my be experiencing "that loving feeling".
Currents wont really make then compulsively dart around. They would just find the calmest sport in the tank and stay there.
If they seem to be moving their gills rapidly, swimming aimlessly, nipping the surface and darting, it's most likely due to poor water quality. Levels are likely off, possible ammonia spike, ext.
Test your levels. If you don't have a test kit, then take a sample of water to your local pet/fish store. They will test for free (then buy a test kit while there).
Here is my trick for successful water changes. Pre-treat your water BEFORE putting it in the tank. Use a typical water conditioner. I use old water cooler drums (5 gallon). I fill them with COLD tap water and then add the conditioner. I also add a few drops of stress coat and stress zyme. I put a plastic bag over the opening, then poke a few holes in the bag for ventilation. I prepare this 2 days before adding it to my tank. A few times a day I shake the drums. This lets chlorine gas leave the water, helps promote mixing the chemicals and allows for the water to reach room temp. 2 days or so after I prepared my conditioned water, I do my water changes. Works perfectly (like a charm). I actually do 2 water changes a week now (weather needed or not) to my established tanks. Fish enjoy the water changes (sometimes inducing labor for pregnant fish ready to give birth) and my levels are ALWAYS perfect. I do a 15-20% change at least once a week. That's my trick/routine. I've had nothing but excellent results doing water changes this way. Hope that helps someone.