No water changes

[chevyjaxon]

ive had a 90 gal up and running for 8 weeks now not even 1 water change ive loaded up the system too ive got a tang, clown, 5 damsels, huge neon wrasse, mushroom corals, and a bubbletip anemone i use marine snow, purple up, and 2 skimmers one is a woodlimestone skimmer the other is made by instant ocean i think im doing great for a noobie and to think i was starting to worry about doing a water change even though my nitrates are under 20 ppm i guess that being said no water changes for atleast another month