Aidan,
Yes that is so, marine algae does lead to cooling, however the growth and warmth occurs first, during photosynthesis and proliferation. Cloud may then form and become so dense that sunlight is reduced and photosynthesis ceases, the algae involved then consuming available oxygen instead of producing it. Similar/same at night.

Where did you gain your impression of the subject? I am seeking all avenues or relevant science or understanding.

"I think climate is being impacted by humans but not due to CO2."

There is always the human effect. The greens are what you might say...The gatekeepers of thought. We will let you pass...but not at the cost of the home you live on.

Balance!....

Tally

"Ask the real experts about ocean acidification, not climate science deniers"

http://www.theguardian.com/environment/planet-oz/2015/apr/16/ask-the-real-experts-about-ocean-acidification-not-climate-science-deniers

"So here are a few things you could have learned from the opinion page of the Australian newspaper this week about the Great Barrier Reef and ocean acidification – the phenomenon where extra carbon dioxide in the atmosphere from burning fossil fuels makes the oceans more acidic.

* Ocean acidification was “invented” in 2005 by climate scientists because global warming wasn’t bad enough.
* Because corals and shellfish have been around for millions of years they’ll be fine if the ocean keeps soaking up all the extra CO2.
* The oceans have a built-in natural “buffer” that stops the water from swinging around the pH scale (the scale used to measure acid and alkaline states).
* People who keep saltwater aquariums at home sometimes add CO2 to the water to make plants grow – therefore, CO2 is great for the oceans."

There are two things to know about these points.

The first is that they were all made by Canadian climate science denier Patrick Moore, who has not written a single peer-reviewed scientific paper on the subject of ocean acidification (or on anything else in the recent past, as far as I can tell. He got his ecology Ph.D in 1974).

The second thing to know (not surprising when you know the first thing) is that all Moore’s statements are wrong, irrelevant or misleading."

"Moore’s dodgy ‘science’

Just because Moore has no genuine expertise in ocean acidification, that doesn’t necessarily make him wrong.

So let’s dive in to the murky waters of Moore’s unique and twisted take on the science of ocean acidification."

Read article for a point by point take down of Moore's article.