My tank is a 75 gal. reef with about 120 lbs. of LR and a 4" DSB,
20 gal sump with a 15 gal. refugium running on a reverse cycle.
pH 8.0 - 8.1, Nitrites, Ammonia & Phosphates 0, Calcium 490, Alk. 11.2 DKH. Nitrates below 10 ( test only reads to 10, Aquarium system Fast Test ), Lighting is 2 -...