How long does it take for trace elements to deplete in a reef? I been backing off on water changes and the corals seem to like less water changes in my system. If I change 2.5 gals a week after the second or so change it seems to bother the corals. If I wait like 3 weeks and change 2.5-5 gals I get a small growth spurt for a short time,but inbetween the 3 weeks the corals look better vs the every week change. I guess the stability of waiting longer makes the corals happy why do I see a growth spurt. The cal alk and mag are the same is it the trace elements or the removal of something that gives the growth boost? I have kept the same feeding schedule to try to keep the nutrients consistant.



