actually I got it from a friend and we did all of it under water. I have had it for 2 months now. Some of it was/ is growing but recently it has taken a awful turn. I found some type of worm inside of it tonight. Thats why I was wondering if it would eat it?
There are worms that might eat sponges, but more than likely it was probably either starving or suffocating in its own waste. Most sponges in the hobby come from areas where they get bulk laminar flow, which they need to feed and excrete properly. You can't get that kind of flow in a traditional reef tank, so essentially they get a thin layer of stagnant water around them and die.