I new I had some flat worms in my tank, I just didn't realize how many.
I put together some blue 20 wall led lights, when i was done i set one on top my tank and leaned it against the main light and turned it on. All the other lights were off. I managed to fall asleep with that light on. when i woke up about 5 hours later the glass that the light was aimed at was COVERED with flat worms. I am going to to this again when I do a water change and vacuum them up.
Has anyone used a spot light on the glass to "round up" flatworms?