Hi. Sara Nedrich here! Hope you like my edits!
Pages to Revisit:
https://en.wikipedia.org/wiki/Reduction_potential
https://en.wikipedia.org/wiki/Pourbaix_diagram
Clarify what causes pink:
http://en.wikipedia.org/wiki/Dunaliella_salina
http://en.wikipedia.org/wiki/Lake_Retba
https://en.wikipedia.org/wiki/Lake_Hillier