Interesting Read on Aquarium Chemistry (and it's easy to understand!)

[btldreef]

Just read through this article and I found it really interesting. Thought I'd share it here and I'd also like to hear some people's thoughts on it:
http://www.advancedaquarist.com/2012/6/chemistry

 

[mr. limpid]

To me it sound like people don't know how to read instructions and can't disguise between colors. A lot of us including me use out dated test kits, which seams to have no effect on results (good to know). Thanks for sharing that.