I have a 10 G cycled tank with plants - Italian vallisnaria, Dwarf grass. I have Neon tetras for 3 weeks now. I am total newbie so please bear with me. Yesterday I added two fancy guppies. Now the problem - the two guppies remain at the water surface. One guppy is a little adventurous to come to bottom but goes back to the surface when it hits on the neons. The other one is almost motionless. The neons seem to be aware of the guppies but they move normal otherwise. Is this a common problem or a compatibility issue. My water is 0 nh3
, 0 no2
, 20 no3
. slightly acidic 6.5-6.8 ph
soft water. Any help appreciated.