Looking good, canna ratios very variable. Getting your EC right is better. In soil no Calmag needed honestly only a little is fine 0.5ml/L if it’s canna Calmag agent it’s got NPK 6-0-0 too much N however about week 5 of flower they need a does of Calmag then that’s in. So for autos that’s 1 week 4 I would say.
Add your Calmag first 0.5ml/L then boosters like, rhizo, cannazym, boost. Etc... then add NPK nutrients (Terra) to achieve correct EC You shouldn’t need more than 1.2 at this stage in soil... it’s good practice to have a routine flush. So feed-feed-water. Any questions just ask✌️🏻
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