First up, I believe this to be a monti cap, haven't fully checked, but I still haven't seen polyps. Its hard to the touch, not flexible at all like an algae. Which leads me to believe its a monti. I got some poop brown polyps from a buddy of mine back in Dec in hopes they were color up into something nice, I went ahead and fragged them and put them on 1.5" frag disks(use that for size reference). When I fragged them, there were no signs of anything like this. I haven't spoke to him yet to ask if he has a red monti cap or not. These are super tiny colonies, ranging from 1/4" to 1", 3 colonie total.
So here are the pics.
People who know me and what I do, know I come across some of the strangest stuff in my tanks. So to keep adding to the strange/odd/not so common aquaria stuff, here some pics....
This one, when I noticed it, was about 1/2", thought it looked cool, figured it was some type of algae, so I left it to see what it would. I figured it would more then likely go away cause Ive seen similar things like it in the past that just went away. Well it didnt, its now 2x2"+ and growing strong 2 months later.
When I first noticed it...

Today...
This next pic, is full of life... I did not make this rock, its actually a large frag disk (2x2x1 cone shaped) with an acro growing on top. It came to me with a clean/bare frag disk, and this stuff has just shown up over the past 2 months.
There are Red, Purple, Green, Brown and yellow Macroalgaes growing on this. Different sizes, shapes and textures. Truly a one of a kind piece.