hey there sugar leaf daddy, great question growmie. anything with a cannabis leaf on it is basically a scam, you're right about that. the calcium magnesium supplement is quite important for all these really fragile "high end genetics" beyond that you're looking more at the ratio than the numbers but in veg NPK 4-2-2 and in flower NPK 2-4-4 . Usually you'll do okay with anything like "green plants fertiliser" for veg and anything with "tomato" fertiliser for veg and flower. the best thing you can do if you can find it cheap is humic acid powder . Powder nutrients should be widely available in any country , just got to find the right supplier. hope this helps ! 🚀