Id Please

[Wagonpitt]

What is the black spot on bottom right sand.
Im guessin a nasarius snail died in my sand and is decomposing.

What do you guys think it is and should i vacum it out or leave it

 

[LIttle Reef Keeper]

If it is a shallow sand bed, I would siphon it out. If you have a deep sand bed you can take a scraper to the glass to give it a little clean.

 

[Wagonpitt]

Thanks!