alright i have a fluval 305 canister and i went to change my carbon and i pulged it in syphoned it and these white little weird things came out! like millions of them! i looked really close and im SURE that isn't bubbles. is parasites visable to the eye?! because it looked like it has legs! lol not all of them thoo like for example pieced brine shrimp but white. this happened to me before but i thought it wasnt a big deal my cichlids didnt get harmed but im just worried because of my puffer, datnoid and arowana.