I have noticed on the front and side of my betta/plec tank there is an outbreak of some sort of weird lifeform!
All in all there are about 40 of them, varying in size from pinprick size to approx 2mm.
They seem to be inside a clear jelly sac, white/creamy colour and the bigger ones of wh atever they are can be seen to be moving inside the sac.
They are not in groups, but individually attached to the glass. I dont think they are snails because I have had snails before and this is nothing like that.
Any ideas what they are and what I do to get rid of them??