Ok so I've been reefing on and off for roughly 25 years, woke up this morning and past by the tank, and looked in quickly(lights are out). To my wonder I see this huge spot on the side glass. Thinking something odd happened I see this blob move! Now I'm wondering what the h e double hockey sticks this is! I'm thinking flatworm, but I had no idea they can get this big! This thing was easy 2 inches long and an inch across! I did remove it and it was like a giant mass of jelly, but it moves!
Any Idea here?
Any Idea here?