Recently I have been seeing more and more of these 2-3 mm clear cysts with multiple white strcutures in them...after a week or so, they are ruptured...never caught the stages...anyone know what they are? Snails?
Your pics are still not coming up, but what you described sounds like the egg cases for my strombus grazer snails. Bunches of little clear cases with white specks (baby snails). They break out of the case and start munching algae right away.