Hi there, I am just starting up a planted tank and have noticed that there are these small, clear, organisms growing on one of the plants. I noticed a couple early on and they have multiplied quite quickly. Just wondering if anyone had any idea what they were and if they are parasites or what and if so, what to do about them. Keep in mind that the stalk in the picture is only about 2mm wide so these things aren't very big. Any ideas anyone?