Man it looks like mg still. I always still got cal/mg diff's when i used molasses and epsom. they take a while to break down in the soil so you wont see the results instantly. I managed to pick up so Canna Mono Calcium and Canna Mono magnesium . Its checmical so it works almost instantly and can stop the damage right in its tracks. i havent had cal/mg this grow so far using theese products. CANNA MONO ELEMENTS MAGNESIUM MgO - 1 LITRE | eBay