m0useanswered grow question a year ago The yellowing on lower leaves is classic Nitrogen deficiency, its moving the N from lower in the plant to the top of the plant.
This means its not getting fed enough, i would keep feeding its veg feed till its done stretching. Then mix in the bloom.
On the note of stretching, there is a lot of space between nodes, this could be from genetics or it could mean your light is dimmed to low/not close enough.
With your feeds, mix em up at the advertised ratios then dilute it down to the desired EC. If you donโt have a ec pen iโd suggest you invest into one, its a useful tool when using liquid nutrients. And always get some run off with liquid nutrients to prevent a buildup of salts in the soil.
Good Luck!