Somehow, my snail grew some algae on its shell

I was at an LFS and someone brought in a mystery snail that was at least 2 inches and covered in green hair algae . It looked awesome but bro you're supposed to help get rid of the algae .

The rocks grew algae and then my snails shells started growing algae . Eventually my babies grew and I could pick them all out and I did a thorough tank cleaning, and wanted to clean my mystery's shells . I tried a toothbrush on their shells , and nope! A toothbrush does not work whatsoever.
Algae On Mystery Snail Shell

A Surface to Grow On : The hard, porous surface of a snail's shell is the perfect place for algae to anchor itself and thrive. The most common type you'll see is Green Spot Algae (GSA), which looks like little green polka dots, or a more general Green Dust Algae that gives the shell a soft, velvety appearance.
Before you rush to scrub your snail , consider the potential benefits of mystery snail shell turning green. Many experienced aquarists actually embrace this natural look.

Algae Overgrowth On Shell
In severe cases, algae can grow over the shell opening, interfering with the snail's ability to extend its body properly, and may even begin to affect gill function if growth extends to respiratory areas. Additionally, heavy algae loads can make snails more visible to predators and may trap debris and detritus against the shell surface.
I would also like to know the answer to this one of my mystery snails has green spot algae on its shell , I often see pond snails on it ! Snail -Inception!

Snails have algae on shells, help please.
Hello everyone, I have a red sea nano max 20 gal and have some snails as the clean up crew. Tank has been up for about a month and all the levels are good. The only thing is the snails now all have green algae growing on their shells . The lights are set to a red sea schedule that goes for...
What does it mean if my FOWLR is growing coralline algae on snail shells (occupied or empty) but not on the rocks or glass? I have noticed spots of what appears to be dark red coralline algae growing on snail shells (mostly empty ones).

anything i can do about the algae on their shells
You can GENTLY take them out of the tank and very GENTLY scrub their shells with a super soft baby toothbrush. (One only used for aquarium purposes!) You can try wiping with a wet paper towel but you'll have much better luck with the brush.








Mystery snails have a protective shell that defends them from predators and harsh conditions. However, aquarium snails may suffer from shell issues, leading to their separation. It's crucial to address the problem immediately to avoid further damage. We'll talk about what causes a mystery snail's shell to break down and…