what are these?

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lilismom1

Aquarium Advice Activist
Joined
Jul 22, 2003
Messages
154
Location
fort lauderdale, fl
does anyone know what the sprouts are? how bout the little clear/white things around the edge of the same rock. these are spreading.
 
Caterpillar weed is a type of macro algae and not harmful at all. It has been my experience that it shows up on new LR and usually dies out pretty quick, however, I just had some crop up on some LR that has been in my tank for over a year and it appears to be doing well.

If they are sponges or tunicates...they are harmless filter feeders.
 
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