"In contrast, some researchers have concluded that, despite a decrease in ocean pH and aragonite saturation, calcification in corals may increase, owing to an increased metabolic response driven by warming associated with increased anthropogenic CO2. Although such findings remain controversial, they emphasize the fact that critical gaps exist in our knowledge of how coastal tropical-marine ecosystems, such as coral reefs, will respond to global changes brought about by increased atmospheric CO2."
This taken from the link you provided
as I stated if you look at data without your purse strings attached........ at a minimum it will take centuries and in all probability at least a millenium or more before "acidification" (a GW scare word) will even bring the oceans to a neutral pH level
the level was approx 8.179 in the 1750s...... 8.104 in 1994 a .075 drop in 250 years....... the last 50 at the very minimum of heavy industrialization........ neutral is 7.0 even if you consider a slight rise of decrease (which isnt probable) and say it will decrease at .1 every 250 years that would approximate 2750 years before reaching a neutral pH level
nature has a funny way of running its course despite what some biased scientist writes as a theory..... which is why the facts just dont support the scientists