Something freaky driving me crazy...
All right, I think I'm either losing my mind or something is seriously up with my tank. Every night at about the same time (10-11pm) while I sit and watch TV, I start hearing this scratching sound coming from my tank. It sounds like this grinding/scratching kinda noise. Whenever I look in the tank with a flashlight, I see nothing. I have always suspected some hidden critter in my tank since day one. When I first set up the 60g hex I would, almost daily, see long strips of what looked like fecal material collecting in a corner of the tank. After moving to the new tank, I found one again. Now I'm hearing all this scratching. Can anyone give me a clue as to what they think it might be? Here's some pictures of the pooh from the first tank:
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In my tank:
75g SW 48"x18"x21"
29g high tank used for a sump. about 15g of water volume
Tidepool SOS overflow
Seaclone 150 skimmer
90 lbs live rock
80+ lbs of sand and aragonite
MAG3 return pump and 2 PH's
Critters: 2 ocellaris clowns, bicolor pseudochromis, 2 yellowtail damsels, yellow tang, peppermint shrimp, a single green polyp zoanthid, Blushing Finger Leather, TWO Green Bubble Tip Anemones, Xenia (withering), Skunk Cleaner Shrimp, mushrooms, Kenya tree
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