White webs growing on hammer coral skeleton

[Highborn]

This stuff has been growing on my hammer coral ekelton and the coral flesh seems to be receding. Can anybody identify what it might be. All tank parameters are in check.

 

[ISpeakForTheSeas]

My first guess would be a sponge, but that could definitely be wrong. Whatever it is, it does seem to be encroaching pretty heavily on that coral, so you may want to remove it. If it is a sponge, the quotes below may help with removal.

The best way I've heard to control sponge growth at this point is to use a steel straw to scrape and siphon out the sponge you want to remove. Sometimes you can create bad conditions for them and kill them off that way, but that's typically much harder and not always effective.

Some other sponge removal methods:

Generally speaking, the easiest way to remove sponges is to scrape them off (the best recommendation I've seen for this is to scrape it off and suction it out).

Other suggestions include exposing the sponge to air (obviously not a guaranteed solution, and definitely not viable for this situation); hydrogen peroxide dipping the sponge (again, not viable here); injecting the sponge with hydrogen peroxide, vinegar, boiling water, or air; microbubbles in the display; and a few more. Predation is not usually a good solution for this issue, and I explain why below:

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