Diurnal pH swing for sps tanks

vijaym85

New member
What is an acceptable variance in pH from day (all lights on) to night ( all off) in an Sps tank?
How spot on is most of your tanks' pH numbers? I currently get a pH reading at night when the lights have been off for about 5 hours at around 3am of 8.24 and in the day after the lights have been on for around 5 hours or about 8pm of 8.32.
Is this acceptable? I got the readings off a Digital aquatics probe that runs 24/7.
 
Mine swings from 7.99 to 8.11 (according to Neptune Apex) at its lowest & highest points. I was wondering what the max recommended swing for an SPS tank was as well.
 
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