where did you get this schedule from all the biobizz products i used had a schedule on them and none exceeded 2ml/lt in non fertilized mediums. also whats with the cal mag? why are you adding it? are you using ro water? i use distilled water from my dehum and even i dont any calmag? you’re overfeeding them and it screws with their nutrient uptake

Looks like nutrient lockout check your nutrient feed PH is in range and your run off .

The yellow leaves at the bottom are a sign of nitrogen deficiency, and some of them turning brown from the tip of the leaf indicates a phosphorus deficiency. The spots on the middle and upper leaves are due to calcium deficiency. Adjust the pH in case they can't properly absorb nutrients due to blockage. Keep in mind that they are about to start flowering, so don't overdo it with the growth fertilizer or they'll start to stretch. The bloom fertilizer already has some nitrogen, so don't worry. Try watering only with the bases and the heaven and see if the deficiency improves.

Hi, what week are you in? Maybe you're overfeeding the little ones, and always keep an eye on the pH.