All of my mollys were at the surface in a large group . They were spasming out and scratching the rocks like crazy . I treated them with all in one marine land treatment for 5 days . They all seemed to be actin normal after and much less spasming and scratching . Couple days later I notice a bunch of fish have these long worms attached to them . Researched it and determined it's anchor worm . I pulled all the anchor worms off with tweezers and treated the tank with Minfinn treatment . Everything was fine for a week and a half . Today , they are all at the surface spasming out again . Any suggestions ?