Grey/white mucus looking stuff

[Saltwater_hobbiest]

Should I be worried about this stuff on my rocks. Sorry if it is hard to see but there are more spots on my rocks with it as well and I am wondering what it is?

 

[Euphyllia97]

Looks a bit like sponge to me. Do you know what texture it has?

 

[Mr. Mojo Rising]

The white one looks like a sponge that nearly killed my corky finger, thats bad stuff. You can use tweezers and pull it off. Don't know what the blue stuff is.

 

[Saltwater_hobbiest]

Looks a bit like sponge to me. Do you know what texture it has?

I poked at it a little and it almost goes right through it. The texture is very soft.

 

[Euphyllia97]

I poked at it a little and it almost goes right through it. The texture is very soft.

Hmm it’s hard to say for sure. If in doubt, take it out… if it’s very soft I would scrape it of and siphon it out as much as you can