Hey,
I will give that a go very soon in my 37Gal tank. it is also a planted aquarium. I have enough lighting to cause instant algae problems if at full intensity. also a side note.. healthy seeds when dropped into a healthy aquarium float, This has given me almost 100% success in germ. half the seed stays above water and my water is O2 saturated from my living plants. also I believe there are certain hormones in the water created by fish and natural bacteria. I should note that all the seedlings I have started this way have always grown very fast and full.
Also by hanging my clone's in the o2 saturated water, I also get almost 100% success from this method. It is amazing to watch roots form, though they wont get large until you bury them in darkness.