That is great what filter dose she have on it?I keep a 20 gal hex at my girlfriends house that continues to amaze me. 3 Ryukin goldfish 3"+, a dozen neons, a 3" chocolate pleco, 6 ghost shrimp, and 2 very happy mystery snails. One blue and one ivory.
The tank is 6 months old and we haven't lost a petco-neon yet. (Y)