The purple/pink may be sponge. There are also some algaes that look almost like mushrooms - slimy and such
A clear pic in the water would be great, but someone else may recognize it now
Could be green coralline ( lucky you ), but it could also be the beginnings of turf or hair algae
Again, too hard for me to tell out of the water
I had the turf start on my base rock. I believe there's lots of phosphates in most dry rock
Don't fret it, it's all part of the maturing process
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