I have some balansae in a ten gallon tank that doesnt seem to be doing well. It constantly puts on new leaves, but the old leaves keep melting. It starts at the tips and melts back untill gone. Each plant always has 3 leaves, but they just dont get as long as I would like. Its a ten gallon tank with screw in CF bulbs for 20 watts, flourite substrate. I dont fertilize at all. Tank has some dicrossus, purple neons, and dwarf cories. The only plants in the tank are crypts and anubias. Any ideas on how I might help this plant grow better?