After installation of the LA3 mini running 3x250W BLV10kk 6 hrs daily, now the tank pH is kept between 8.45 and 8.05.
Before that with the Aqualight of 2x250W BLV10kk (10hrs/day) 150W BLV20kk (12hrs/day) the pH is kept between 8.25 to 7.8
This shows despite running shorter hrs with higher intensity (but overall less electrical consumption) there is still greater photosynthesis activity.