id please

I found a strange looking growth on one of my rocks after transferring it from one tank to another. I have a picture but I don't know how to post it. I'm going to try and insert it but, in case it doesn't show, I'll describe it. It is a small circular growth that is light purple in color and feels spongey. It is about the size of a quarter and is on one of the first LR's I bought a year ago. There is a smaller piece close by that is roughly 1/4 round. I have only one type of shroom in the tank right now and it is red. Thanks for the help. Sorry if the picture doesn't load.

 

Well it loaded but geeze it is small. Hope everyone can see it clearly. The color in the picture is more purplish than the growth itself.

 

its a mushroom

 

Any idea on species ? It is definitely a hitch hiker as I only have one other mushroom colony.

 

looks like a common mushroom, if ya had a bigger pic, I could tell better.

 

slightly bigger picture

 

Sponge is my guess.

 

Is it okay to just leave it in there? It is a nice addition due to the coloring.

 

Yes, sponge or mushroom its fine

 

Yes indeed. They're not harmful and will even filter your water a bit.