Hey there Supermega, so sorry to say but you’ve been getting some slightly wrong advice so far so the problem you had kept spreading . Basically what happened is that the intense light schedule coupled with optimal growth conditions has been sending the plants into overdrive which means they need more cal mag . However they’re also getting tiny bits of N in loads of different things so they’re getting too much N. The white powder you saw before was simply minerals in the watering that had dried . The rust colored spotting is from calcium deficiency , the yellowing on the edges is from magnesium. The green glossy look on the leafs and the downward pointing tips is from N excess. In the future don’t remove affected leads so you can check on the progression of your symptoms . For now choose one of fish mix or rhiz , use cannazym once a week instead of every time , reduce your light cycle as much as possible and keep adding cal mag but remember that most of these products might have N in them. Anyway growmie hope this helps 🔥🚀