I just bought this kit and put it to use tonight. It's French, so the directions are very limited. It said (or so I think) to crack one of each of the vials (5 different ones) and to pour into your tank. I poured the first two in....no problem. Pour the 3rd....and the water got cloudy and the water going down to the sump got a lot louder like there was a major reaction going on. I have fish and they seem to be acting a little weird. Does anyone use this stuff? Please tell me I didn't just kill everything in my tank....