slow tissue necrosis

Water tests and what they mean to me

Milka coral

11/28/15 Performed water tests at 1 a.m. specifically because I spotted some STN in my tank all of a sudden.

Temperature late at night read 78.1 °F
Looking at the temperatures recorded by the Apex recently, I had a significant swing due to our weather change over the past 48 hours or so. The low was 77.1°F and the highest was 80.6°F, which is roughly a 3.5°F swing and more than I usually would allow. Maybe this is why three corals are reacting. Not sure, but it's definitely a consideration.

pH measures 8.26
pH varies daily, but the average reading is 8.04 to 8.35 daily.

ORP reading display 285

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