Nov 10, 2013 #1 Bendyboyben Aquarium Advice Apprentice Joined Oct 20, 2013 Messages 37 Can any is this please just started growing it's really bright
Nov 10, 2013 #2 mr_X Aquarium Advice Addict Joined Apr 27, 2008 Messages 17,895 Location Fairless Hills, Pa. It appears to be sponge.