What more can I say? A disgustingly big patch of snot grown on the underside of the lid of my fishtank. It's not harmful, so I wanted to see how long I could let it grow before it got too big. It got too big, so it's getting wiped away tonight.
Brighter than Slime1, and almost 'other wordly' in appereance, I like this photo best of all. It almost seems like it's acting as a light fixture.