<span class="link_user">@Matjf420</span>, Hm, did you buffer your coco coir before planting? I added like 5ml of calmag per litre and soaked the coco two times about 24 hours each.
<span class="link_user">@Growforsleep</span>, Thanks for you reply!! This is crazy, i've started using Dual part coco and i get cal-mag deficiencies i've never had during veg, if i mix nutes in anything less than 250 ppm cal-mag they develop white spots by the next day ;( i love the product and how the PH holds for 1-2 days but can't seem to get dosages right.
<span class="link_user">@Unc1e_Co</span>, Yes, the 12 hours is only for photoperiod plants, this is an autoflower that doesn't flower based on a light period.