funny you guys should mention that.....Since I put the lily bulbs in, I have been noticing these ultra fine particles floating around...I'ts not a bacteria bloom, but visible particles, I was thinking, my filter isn't working efficiently, I replaced the filter pad, and nothing. Only today, did put two and two together, I noticed the fuzz on the bulbs, shook it a bit, and a TON of fuzz and little particles came off, so I removed them. I took one of them apart, out of curiousity, and it was all moldy and stinky, and gross on the inside....threw that one out. I took the other one apart, and it looked ok, so I just have it sitting in a cup of water, where it can get some sunlight. The aponogeton bulbs are putting off a little bit of junk, but not bad, and they're starting to sprout, so I'm keeping those ones in. The fish would pick at the lily bulbs, too, which scattered the mess even more, so they had to go. My water has been slowly clearing up.