First, the essentials: 125gal mixed reef with ~180lbs live rock, 30lbs of which are in the wet/dry filter as rubble. Sg 1.026, pH 8.4, Nitrites 0, Ammonia 0, Nitrates 1, Ca 440-460 (I hate Ca tests!), KH/Alkalinity 8.6/3.09 (Salifert tests). I've had this tank set up for about 2.5-3 years...