I've just pushed code to github to support comparison of ratios of nutrients. You will find the data at the bottom of the middle column.
The defaults are the optimal ratios discussed here, but as with other nutrients, you can modify them based on your own theories and beliefs.
http://2potatoes.github.io/genetic-soylent/?recipe=2potatoes-hacker-school-not-modified
http://2potatoes.github.io/genetic-soylent/?recipe=simplecheapvegannosoy-soylent-low-carb
http://2potatoes.github.io/genetic-soylent/?recipe=donals-complete-soylent-sedentary-1800