We just set up a new 10 gal
. tank. Put in a couple tetras (one blue black and one red black tetra) to start the cycle. Last night the pink one was acting crazy pushing against the side of the glass all the time. the blue one was acting normal. blue ate, pink didn't. This morning both are acting a little nuts (though red one more) neither has eaten before it all went to the bottom. Ph may be a little hight at 7.4 I am working at bringing it down. I have no idea what is happening, does anyone else?