| Oi!
I also believed the idea about the 'blender' untill you think about it for a minute. If there is 'air' in the 'blending' then the 'air' might kill the sponge.
A better idea is to take a clean tooth brush and scrape off the surface of the sponge in question and the little 'bits' will find new homes and start to grow a new colony. I did that with a yellow moon sponge and it worked.
If you can 'blend' the bits without folding in 'air' then you are fine. I have never actually heard any one doing the blender thingy and they saying it did actually work. I think it is a 'submurgen' myth, but what do I know I clean sponges with a tooth brush, HA!
To answer you initial question as long as it never came out of the water it will survive. Remember that sponges do not like the light, that is why it was 'in' the rock. They also like [need] good water movement so if you have sponges that are growing then that means that your tank is doing well, CONGRATS!
Cheers!
nigle
!~! |