Originally Posted by Fishman007
Yours probably died, they need really good water (not saying yours isnt) . And also phytoplankton, and other microrganisms.
Sponges actually like dirtier water since they are filter feeders. They tend to be boom and bust. They come and go depending on who knows what. I used to have hundreds of sponges, then they just disappeared . Ill get some here and there once in a while but they come and go.