I think you are absolutely right to watch what chemicals are used. We are unwittingly stumbling forward and not considering what we are doing to the oceans which is where a huge amount of our chemicals end up.
I dipped into this (excuse the pun) on the swimming pool group forum. http://www.survivefrance.com/group/swimming-pools/forum/topics/co2-and-your-swimming-pool
I am unsure of global warming because the heat must either come from the sun or underwater volcanoes but what is very worrying is the Co2 levels are reducing the pH of the oceans and they act as eco systems to keep the planet alive.
I was fortunate enough to meet up with Dr Howard Dryden a marine biologist who together with many others has theories on why the ocean is becoming more acidic and it's down to chemical waste from factories and what we are putting onto the land that is getting into rivers and then the sea.
If the plotted graphs of the acidification of the oceans follow their current path the fish will not survive as they are very sensitive to slight changes in water pH. This is likely within our lifetime.
We need to reduce our Co2 outputs as well as tackling cleaning and gardening chemicals. I posted on the pool forum because people run pool pumps for most of the day and they are power hungry devices. I have been doing a lot of work on Eco running of pools and it is not necessary to run these powerful pumps any more and the savings in electricity and therefore Co2 production are huge.
I used the calculator on a University web site so I need to double check the figures from another source but the results for my pool are 128kg of Co2 per year. A conventional pool setup 2056kg and a mono block type (Desjoyaux, Magiline, Waterair to name just 3) a colossal 4000kg.
We all need to do our bit.