I've been living with an irritating problem that after trying all possible combinations I have decided it must be a ghost! From time to time the filter on my 100L gets unplugged it's really weird. I have a heater and lights plugged into the same extension cord and there used to be a second pump also plugged into there too but they are never affected. The wire has plenty of slack a dip loop and all that you would expect so it is not pulling itself out. I have blamed my fiancé for moving the sofa when his friends come pulling out the wire but its happened again last night and his mates didn't come round! It was all fine last night at 10pm and again at 12pm when I added the fungus meds to the tank and then came down to check on the babes due to a panic! Everyone was fine all fish were fine. Came downstairs at 7 and I thought it was quiet and sure enough the cable was unplugged and I don't mean slightly out of the socket I mean a good 40cm away from the socket! The only other possible solution is that I was sleepwalking again I did dream about my fish last night so it's a possibility. My fiancé suggested getting a camera set up to film the plug through the night but after watching paranormal activity I don't think I would have the guts to watch the recording back!! We have had many other "freaky" things happen it's getting quite spooky in my household at the moment! I hope this isn't doing any harm and I hope it is not to blame for my current fungus outbreak. I never thought about it before as I always had two filters on this tank but I removed one to kick start the cycling on my other tank. I think I need to get it back set up on this tank now! I am not having much luck with equipment at the moment. I broke a tetratec 1200 replaced it with an all ponds solutions one that is so noisy it triggers my migraines the same filter (due to my own fault) spat at me in the mouth and dripped down to my plug. Now this mysterious plug socket thing on my smaller tank... I'll be keeping a close eye on my water parameters for a good while. Would you set up a camera to try and catch the unplugging in action? If you did record on a night it unplugged would you have the guts to watch it back?!