Vegetative Phase ^N, vP, vK.
Blooming Phase vN, ^P, ^K
Those are arrows representing a high nitrogen low phosphorus and low potassium used for veg.
And a low N, High P, High K for bloom.
There really isn't a strain special nutrient. There are nutrients that are used more specifically for weed, like Humboldt Nutrients, but as long as your ratios are like above, it's fine.
Sativa have a longer flowering stage, but eat less food weekly. It's likely they eat a similar amount of food overall when compared to an Indica, but weekly... Sativa usually feed less.