Lighting is a nicer model T5 fixture, less than a year old. I shouild also mention that all my zoo frags I bought two months ago and attached at various places around the tank have also died as well and the macroalgae plant I bought (with rock attached) ain't looking too healthy either.
I got zeros across the board for ammonia, nitrite, nitrate. Stable pH at 8.3. Stable salinity at 1.25. Stable temperature at 76-77. Haven't tested for calcium or magnesium recently, but do run a CA reactor. Approx 12% water changed weekly. (250 gallon system.) Coralife brand salt is used. Water flow is approx. 15X gallonage via two Koralia 4's (700 gph each, if I recall), a closed loop with SCWDs at approx 1,000 gph, and the main sump pump at approx. 1,000 gph.