Unknown Sea slug hatch in tank.

[RickysReefer]

Hey guys noticed this slug in my glass earlier and wondering if anyone has seen them before, we must of had a batch because I probably have 20 or more smaller ones on the sand bed and rock work. Trying to see if this is something I need to address immediately or if I could feel safe to just observe with caution

 

[SHNICI]

Hey guys noticed this slug in my glass earlier and wondering if anyone has seen them before, we must of had a batch because I probably have 20 or more smaller ones on the sand bed and rock work. Trying to see if this is something I need to address immediately or if I could feel safe to just observe with caution

do you have corals in the tank as well ?
Also observ them and look what they are eating in your system. I'm not sure but it look like Elysia SP. Try to compare them to the link I give. Also please get some photos under white light, that can better help for ID.

Best Regards and WELCOME TO R2R, Happy reefing

 

[SHNICI]

Also I member similar shape of slogs I had before on GSP (Green Star Polyps), if you have them check how they are going and are there many of this slugs over

 

[RickysReefer]

Yes I have a few softies and cloves, I haven’t noticed anything in the corals themselves and I’ve dipped all my corals pretty well. I wonder if it could have been in the sand I just got. I had to get a new tank in an emergency situation and got new sand with with.

 

[KJ]

Hey guys noticed this slug in my glass earlier and wondering if anyone has seen them before, we must of had a batch because I probably have 20 or more smaller ones on the sand bed and rock work. Trying to see if this is something I need to address immediately or if I could feel safe to just observe with caution

Look like Dermatobranchus sp.