Id please
So this showed up about a month ago on a piece of base live rock that has been in the tank for 10 years. Nothing new added to the tank in months. What is it? Looks to be growing a tube at the bottom. Never retracts. Just keeps getting longer.
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90gal display, 29gal sump/refuge, 8X54w T-5 lighting, 3 1/2 inch sandbed. 160 lbs live rock. five head green&purple tip frogspawn. 10inch elephant ear. 3 zoa. 3BTA 2GSP boat load of Kenya tree. Watermelon mushrooms. botton polyps. Xenia.:cool: