For the past year to two years I've been noticing that when I clean my filter pad in my sump there are these whitish round "cysts" that are bit sticky to the touch. Also one night when i was about to turn the lights off all of the fish in this tank seem to be in a feeding frenzy with little white specs that were free floating in the water. I'm a bit puzzled what's going on in there. The tank is a 300g 96"x30"x24" inhabitants are 30~clowns loaches ranging from 4"-9", 4 corydoras, large calico BN pleco, (2) 4" red streak severum, (9) 5" metynnis fasciatus (tiger SD) , n (3) 5-6" toxote blythii's (marbled archers). I don't know who could be the culprits but, am leaning towards the archers as everybody else is too small. Any input would be great! Thanks!