There is green coralline algae however in my experience it takes a while for the coralline algae to want to take hold and start growing parameters got to be right lighting's got to be right I actually had to add fresh eggs with it already drawing on there and I had to buy some coralline algae out of the bottle to really get it to start taking hold in my tank they sell it at algaebarn and also BRS not positive but some might tell you not to try to do that at this moment and might be too new of a tank



