Gray transparent slime?

[needlehandssoftfingers]

Do my snails leave this kind of slimey looking stuff behind? It's hard to spot at first but just below center of image where rock dips in. I've seen a couple singular long skinny white threads coming from the rocks too, is that from my snails or is it a a bacteria or algae or beginning of aptasia? This is the best picture I could get at this distance. I feel like there ls some yellow strand in there too, barely

 

[AydenLincoln]

Do you carbon dose? If so then it’s a bacteria bloom. But it’s also blurry/hard to make out.

 

[tbrown]

That looks like a possible sponge.