Aug 5, 2012 #1 D Dave-N-Jewel Aquarium Advice Newbie Joined Jul 22, 2012 Messages 4 Location Edison, NJ is this a pineapple sponge? and do i keep it or remove it? thanks dave
Aug 5, 2012 #2 Crystal A Aquarium Advice Addict Joined Apr 11, 2012 Messages 1,069 Location Ontario,Canada Yup it is and I would leave it. Harmless filter feeder.
Aug 5, 2012 #3 Petrichor Aquarium Advice Activist Joined Jul 9, 2012 Messages 127 Location Ontario Yes and yes! They'll randomly appear and disappear in your tank throughout its lifetime.