I had good luck with stylo's and birdsnest under the PC, got decent growth and good color. Just really not enough light for acros though, they lived and kept color, but hardly grew.
If you want to do it right, upgrade your light. Any good MH, T5, or LED fixture will give you good results IMO. I've had my Radion for over 9-mo now and have had fantastic results in both growth and color.