So i have done my reading up and im pretty sure i have the start of it, i have a neon green one that im pretty sure is coralline and the start of the purple. Im wondering if im correct, and if they both can be growing together in the same tank. The purple is more on the live rock and is a little harder to see its just the start but pretty sure thats it, and from what i have read pretty sure my green stuff is coralline as well. Havnt touched it but it doesnt come off easy the snails go over it and it doesnt come off easy doesnt stick up or isnt hairy it seems like its hard and on the rock. Please let me know and see if you can help me out.