ID

[mohammadali]

what is this algae and snail's on snails ?

[gmann]

bryopsis i think

[mohammadali]

Should I get rid of them ? Is it bad or good ?

[mohammadali]

Snail on snails shell

[Kabong]

The small hitchhiking snails are "slipper snails"

[DKoKoMan]

The algae looks like bryopsis as mentioned above. There is a lengthy post in regard to it taking over tanks and treatment options. IMHO I would discard the rock and pickup a new Piece of LR. I have learned the hard way with a chunk of LR with aptasia. You will end up spending a lot of time and money trying to remove bryopsis. Hopefully you find the answer you want in moving forward.

[Tigweldpro]

Originally Posted by mohammadali

Should I get rid of them ? Is it bad or good ?

I would scrape the algae off of any snails, you don't want that possible bryopsis in your tank at all.

Those small snails I don't know what they are. I had a bunch on some live rock I bought but bleached it so there gone. Some sort lf limpet snail

I'm super OCD with putting anything unknown in my tank I go over everything with dental tools and flashlight, replug any frags and don't add any rocks to my tank. Bleach, peroxide, coral dip, iodine, dettol are my friends.

[mohammadali]

The snails on on snail been for over 3 months and same thing with algae but it hasn't spread anywhere else

[Tigweldpro]

Originally Posted by mohammadali

The snails on on snail been for over 3 months and same thing with algae but it hasn't spread anywhere else

Do some googling on Bryopsis & limpet snails then make your own decision.