At what point do you kill or remove sponge?

[Troylee]

Had this sponge growing on my hammer for a minute! It’s decided to explode with growth recently rrrrrrr… it’s not affecting the hammer as it opens fully like it’s not even there during the day.. at what point do I remove it? And what would be the best way?

 

[ISpeakForTheSeas]

My answer from the other thread:
Generally speaking, the only times I personally would remove a sponge are when it's killing corals or when it's spreading like a weed (and in some cases with quick spread, I might just trim it back if I like the sponge enough).

That said, my favorite recommendation that I've heard for sponge removal is to scrape it off and siphon it out with a steel straw.