Thanks Tex Gal. Not sure if there was anything special i did other than move the floaters to a bucket for a few days when i was cleaning up my tank. While there they only received minor light which came from the tank. When i was moving them back i started to notice some having dried up flowers, well now a few more days passed and im noticing the blooms.
Mine also at first started being green with slight pink on them, but as they matured they got more and more pink. Also noticed as they matured they started growing vertically towards the light.
Heres another shot of the floater from a few weeks back.
came across this post while searching wheter they can survive under a little higher temperatures, low 80's. did you ever experiment with them to see how they grew under different tank conditions?
mine also flowered last spring, here is a pic