sponge id

Hi all! For a little while now, my torch has had this clear white spongey stuff growing on its base and the past two days the torch hasn’t been out as much. Last month, I took it out to dip it and I carefully used a knife to scrape this stuff off. It was crunchy and sponge like but I managed to...

Can someone tell me what is growing in my Sump tank? This is the largest growth but there are other spots. Should I remove it?

Black sponge like object on my zoa rock could someone tell me what it is and if it’s bad for my tank

Hi can I get an ID of this sponge, and if I should remove it….. also anything I can get to limit growth as it seem to be growing fast ID for the white finger looking ones and the pink one aswell…. Thanks