that is true provided that you don't overdose on your ozone.
OD and you convert the DOC into forms cannot be skimmed.
If not what happens to those DOC? break down into ammonia?
When the rate of photosynthesis slows down we should see the pH slowly taper down. However it is not reasonable to expect the pH to raise in proportion as it increases as pH is log scale meaning pH 7 and pH 8 has 10 times the difference of H+