I bought this about 3 weeks ago and it still hasn't fully opened. I was told it was a toadstool and it looks like it but it doesn't have long tentacles like most I've seen. It's every bit of 9" from point to point if not bigger. I'm also wondering if they will split themselves. About three days ago a large slit in the bottom started to appear, and as you can see in the pic it's pretty big now and going right through the middle. I have a 72g bowfront with 2 14000k daylights and 3 460 actinic. The toadstool is sitting in the middle of the tank at the bottom. Any help would be great...
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