4 months and looking good i think. I stopped checking chemistry about a month ago . We keep salinity level at .25 If critters look happy im not going to worry about it. Anyway, im happy nothing has died, HOWEVER; I have had TWO fish completely disapear could something on the list be eating them? One was a little yellow goby, the other was a green mandarin. Also is that pulsing Xenia supposed to spread like a weed? Inhabitants are; 1 Starfish I blue legged hermit crab 2 emerald crabs 3 red legged hermits 1 Anemone crab 5 snails 1 large red shrimp 1 Pistol shrimp 2 clownfish 1 large BTA 1 small BTA Xenia Ricordea? (Dunno whats its called. Its flat and round and i have 2). 1 Torch coral 1 small GSP Zoanthids Sponge Copepods, etc. Thank you, Sent from my SM-N920T using Tapatalk