Do they look like they have shells on their back? If so they could possibly be stomatella snails, which are fine. If no shell, then I'm not sure. I might lean towards some kind of flatworm, which some of those are bad.
I tried blasting them but they stick like crazy and won't come off. I have a feeling they are breeding on the frags. There are new baby ones every day. ..
Probably are if your see that many. Gentle take the turkey baster and shoot them with lot of light puffs, if you have to, use the turkey baster to agitate them . Do not touch with your hands, the can be very poisonous
The big frag gsp had them for a few weeks now and hasn't opened up since. Is it safe to say it's a goner? Should I just throw it away? That little piece of frag in the pix the critters just discovered and it's been a few days it hasn't opened.
Naw, don't assume it's done with yet. Can you grab it out and shake it off so we can perhaps see a little better what the critters are. They might not be the cause of the problem, but may be there because of a problem.