I have 3x250W MH lights (14k's) and 2x165w VHO's.
the tank has been up since january 01 of this year.
ammonia, nitrites, nitrates are at 0, phosphate around 0.1, and average calcium 420 (although I'm slowly raising it) and average alk is 9 dkH. magnesium is low right now, around 1000, and I"m also working on stabilizing that.
When you say stable, do you mean as far as amm, nitrites/ates, or should I also wait for stability in mag/calcium/alk as well?
Thanks