
. Every once in a while we get these "chasing numbers" threads to add more contradiction to an already confusing topic for those new to the hobby as well as those experienced. Sometimes making people question their process to maintain their tanks.
I'll say this, I chase a range of numbers and do not freak out if something isn't within my "range" and start doing crazy crap to get them back in my range. If PO4 is high (rarely is these days; even have to dose to keep them detectable now), I just watch feeding. If is does get too high, only then will I run something to decrease it (but also make sure that I am not stripping it too fast).
NO3 never been a problem, but I also have to dose it as well to keep it 5-10ppm.
dKH between 8-9.
Calcium around 450ppm
Magnesium is currently high at 1450 (gonna just let is drop naturally)
pH - use a CO2 scrubber to keep it above 8
So yeah we all need to be aware of what our numbers are and maintain an "acceptable" range for our systems. We all do something to stay within our ranges too. Whether it is via water changes, additives, over feeding, etc. everything we do affects out tanks. I believe the key is being in tune with your tank. Just "chasing" the number will not do you any good unless you know how to accomplish it appropriately and you know your tank.
I find the easy approach to it is identifying a coral in your system that tells you when something isn't right. That particular coral can help you identify when NO3/PO4 or any other significant parameter isn't right. From there you test see what is going on the put in an action plan to right the ship over days (not immediately).