I started my 55g on 1 Dec with Colony. I have 6 albino cories, 4 platys (one of which just dropped some fry), 8 neon tetras, 12 ghost shrimp, a mystery snail, two marimo moss balls, 3 medium amazon swords, 1 small anubias, and 1 small java fern (windelov). My water parms: 0 ammonia, 0 nitrites, 20 nitrates. Should I be doing my first partial water change already? When do I need to vacuum for the first time? Sorry, I know this must be redundant, but my quick search didn't return answers for these questions. If I missed it, will you kindly post a link to the other thread? TIA!