Agree with
@Shirak and
@brmreefer about investing in your own RODI unit. Someone local here in Dallas TX was just giving one away as they upgraded to a faster flow model - watch craigslist, etc as you might also be able to score a deal
water parameters? phosphates, alk, calcium, magnisium, ph, salinity, temp, nitrates ... and keeping corals you'll need test kits if you don't yet have your numbers
@Just John at 2.5 week old tank barely thru cycle (assuming their ammonia & nitrites have returned to zero) and can't be yet sure you are maintaining cycle (water change, keep feeding, keep checking nitrates and keep them under 10 (under 5 better) - so you are right about if tank is healthy and stable... but we don't know that it is healthy yet (need water parameters provided by
@reefguy.5 , but that tap water is indicator not healthy enough for corals) and age of tank just can't yet know it is stable - another 2 weeks or so AND knowing water parameters, (and using RODI water) then different conversation
@littlefishy thanks for confirming what stressed Xenia look like! Mine are just prolific growers and wouldn't think would shrink into those nubs but given stalk seems flexible... - glad you knew and glad you shared
@reefguy.5 Hoping this works out for you! This hobby can test someone's BBA - Bounce Back Ability but Xenia are tough so it has BBA too if has lighting and healthy water parameters