gear-head
Aquarium Advice Freak
What the bloody 'ell is this thing? Looks like, and is about the size of a Q-tip with a few spikes coming out of the top?
Yes a "Q-tip" sponge.Very common in newer tanks. They are nothing to worry about. They come and go as time passes.Q-tip for sure
Completely safe . Free filter feederI have one of these too. Just noticed it a few days ago and it has been growing. It's about the size of a small Q-tip head right now. Very curious looking. I love to watch new things in my tank - just hope it's safe.