well, the offending java fern with BBA is fairly high in the tank, and if it makes any difference I think it may have come with the algae.
I'm in between getting plants for this tank, I'm planning to place a largish order and heavily plant the tank.
as for stocking, it will probably be somewhat heavily stocked but for now is going through a fishless cycle.
I'll definitely add another bottle of CO2, just need to get a 2L bottle of soda and empty it, lol :P
should I be fertilizing in this tank, though? that was really my biggest question...
EDIT: also, the light is about 4-5" above the surface of the water, and I'd heard that with 1 bulb T5HO over an 18" tank with the light suspended that high, light intensity is usually medium?