I have a 2.5 gal Mini Bow with a few rcs and a couple clithon corona, planted with java moss, dwarf sag, blyxia, an anubias nana petite and a few red foot floaters. I am using a 10 watt aquarium CFL, which gives 4 wpg.
My plants are growing very well and I have had no issues with algae at all, none present.
Kristina