technology

I was trying to find out what part of the world the Marine aquarium/Marine fishkeeping hobby is most popular but I couldn't really find anything definitive. My guess would be the USA, or Australia but it's only a guess. I was just wondering what countries are most developed into the hobby, I...

With all these alkalinity monitors and related equipment that are already on the scene, I was wondering if there was any work being done on an actual sensor that did not require titration. I know Seneye has something coming out, but that appears to calculate the carbonate level using CO2...