PH before lights

[Mike Arnold]

Just curious, but should I even be worried about PH before I turn my lights on? My Alk is at 8.7.

 

[Dannyboy402]

I wouldn't think so unless there's a problem. The lowest my ph goes is 7.9 overnight and during the day its around 8.1-8.2

 

[fushi]

Just curious, but should I even be worried about PH before I turn my lights on? My Alk is at 8.7.

PH tends to drop after lights go out (when photosynthesis stops), the general consensus is to try and keep your ph between 7.8-8.6 with the closest to 8.3 being best for coral growth.