The information is clear and concise. I have a few in all of my tanks but as other readers / posters have stated, I hadn't given them much thought. This write up just made the plant much more interesting to me. Kudos!
I have 3 large in my 5.5 gallon tank and never thought about this. I just finished doing a water change in my tank and I did just that without realizing why. I just thought they looked dirty and a little brown, but now that I know I will do it often. Thanks for the advice!