Hi there, I'm relatively new to this reef keeping hobby and need some advice. Can anyone identify both the yellow and the black growths in the photo and advise if they are good or bad.
Cheers Dave
Hi thanks for the feedback. Yes I used live rock when I set the tank up, it is just that the yellow sponges seem to have become more common over the past month or so.
Large Build Reef Showcase My 235 Custom Waterbox Reef
