I've noticed this small spot slightly getting larger over the past week.. Today it was very noticeable and longer than normal feeder like tentacles were coming from it.. You can't see from the photo, but it appears to be white and "tissue-like."I have had a decaying chalice frag in my tank and have now removed it.. A water change/metal halide bulb change and purigen filter change have all been preformed today. I am slightly worried as it seems to be getting larger.. Any tips or suggestions would be great.
Thank you in advance.
Chase


