So for some reason this is the first time I’ve truly looked at my tank with a flashlight in complete darkness. Well I turn the flashlight on and these massive spaghetti like tentacles (6-8+” retract back into the rock. There was two origins of these tentacles and couldn’t see whatever creature it was. I couldn’t get a good pic or vid because they haven’t fully extended again. Second I have these things... pic below if someone can id. Those little spaghetti things have me more worried. Super creepy, I’ve never read anything like it one here