Hello, I'm very new to this whole fish thing, but I've done quite a bit of reading. I have a ten gallon tank and "detoxified it", but when I added two neon tetras last night, I noted that there seemed to be a current. They stayed in one corner of the cage, but eventually swam around to the rest of the tank. This morning I woke up to turn the light on and feed them for the first time and found one dead, wedged in the bottom of the filter. The other one seems to dying as well. Could the current be too strong for this particular species of fish? I bought a Tetra Aqua Care 10 gallon starter kit with a Whisper filter (suction cup model). Thanks for the help.