I set up a new tank weds and last night I turned the light on to see how the waters looking etc. I noticed little flea like creatures darting about in the water really tiny things, and worm/leech type things on the glass? They both appear either pale green or white and look quite florescent in the light but WTF are they?? All the tank has in it is washed new gravel, 3 plants from existing tank, ornaments from existing tank and heater. Filter is maturing in Old tank. Now I did use a new tank booster which came free with tank which adds bacteria. Could this be them? My old tank certainly doesn't have these critters!! Help!!!