Rock flower babies or horrific pest algae?

[dlc]

At are these daisy like things close to the gap mat? I was hoping baby rock flowers but they have long thin stalks.

 

[vetteguy53081]

Looks like sponge

 

[ApoIsland]

Those are definitely not sponges. They are soo small it's hard to tell but the ones with light green pigmentation don't look like rfa to me either. Maybe one that appears a little flatter and thicker and has a slightly more clear/white coloration. Although that would not make for a very good looking rfa.

Every time I have seen baby rfa in my tank it is very obvious what they are. Could just be different type rfa though so who knows. Give it a week and you will have a much better idea.