So I'm at zero nitrates and have a a pretty good filtration system going (at least I think I do). I believe my phosphates to be low but detectable although without a Hanna checker I'm not for sure. My question is to obtain the low levels of nitrates and phosphates that seem to be desirable do I just try to adjust the skimming schedule? refugium light schedule? feed more? OR keep everything the way I have it as I feel it's pretty stable and then just dose up to the levels that I want. Thanks for any advice.