Water chemistry for beginners-discussion thread

Thanks chinnp for an elegantly written article. I appreciate simple explanations in a conversational writing style over an in-depth lecture any day. Kudos.
 
Hard to believe I wrote this article two years ago when I only really had two tanks. I know have 6 (4 of which are actually running though) and I may have to re-visit some of the stuff I wrote about.
 
Coming from a noob this was a great article. Thanks a million.
 
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