First time autoflower growing need help

Hey there guys,

I am going to start my first autoflower grow and need some help from you. I will be growing 5x dark devil on 1.2m2 scrog. As a do research I couldn't find a proper answer for feeding, probably cos I Don't have ec meter. Here is my equipment :
*2.4x1.2 m grow tent
*15 lt easy to grow autopot system
*1x600w mh
*1x600w hps
*2x 350m3 fan for intake and outgoing
*%70 coco %30 clay bubbles for medium
* I am going to use advanced nutrients sensi coco a+b, voodoo juice, big bud, bud candy, overdrive, flawless finish and superthrive vitamin

Here are my questions:

1- do I need to add cal-mag or sensi coco will be enough for start.
What doses I need to feed them. ( start from 1/4 and go up?) Is there any feeding chart for it?
2- what yield I should expect

Thanks for helps

Hi man. I don't know why but most autos need a cal mag additive at some point in their life. I tend to start it really low and get up to 1.5ml per litre before final flush.

I've only used Canna nutes and they do 3 decent schedules, light, moderate and heavy. I start of light and end up heavy near flush. Start any nutes low and slowly raise over time. A ph pen is more important than an ec one imo. Keep the ph within optimum range.

Yield is like the length of a piece of string man. Too many variables to get an approximate total dude. Don't stop reading and you should be fine.