hi have had the tank up and rumming for over 6mts now, its 190litre, medium planted 2 dwarf gourami, 1 ram, 10 rummynose, 10 neon tetra, 1 pleco all others are fine great colorings, with light on from 14hrs a day weekley 25% water changes all levels and peramiters are fine, this is why i was...