Pyramid's Tutankhamon & Canuk's PE #2

NB: I add 1 drop of superthrive per gallon and not 1ml per gallon like written above July 12th: Fertigation with the same recipe (1100 EC 6.2 PH) watered until 10-20% run-off July 13th: Fertigation with the same recipe (1100 EC 6.2 PH) watered until 10-20% run-off July 14th: Bought a new PH pen (Apera PH60) to replace the cheap chinese one I got on amazon and found out my PH was off with the chinese one (7.2) instead of 6.2-6.3 -_- Good thing I got this! Fertigation with the same recipe (1100 EC 6.2 PH) watered until 10-20% run-off July 15th: Transplant day! 350g of Canna coco in brick in water to make it expand, then mixed it with some perlite and got just enough for 2x 3L pot and 1 plastic cup! Poured some Great White Shark around the hole wall and the bottom before transplanting both of them in those 3L pot Bought and installed a cheap aquarium Reverse Osmosis Water system, great for removing chlorine and other contaminants, now the water is at 6-10 EC instead of 300+ EC! Hell of an improvement! Fertigation with the same recipe (1100 EC 6.2 PH) watered until 10-20% run-off July 16th: Fertigation with the same recipe (1100 EC 6.2 PH) watered until 10-20% run-off Weekly EC run-off measurement: around 300 EC more than the input water, which is exactly what we want! July 17th: I see some sign of Cal Mag deficiency (rust spot on some lower leaves) from what I read in DR. Coco book, the error was that the nutrient solution was diluted with water only to meet the 1100 EC range, should have been diluted with water containing Cal Mag in it, its what I will do from now on... Fertigation with the same recipe with Cal Mag at 6ml/gal for a couple of days (1100 EC 6.2 PH) watered until 10-20% run-off July 18th: Fertigation with the same recipe with Cal Mag at 6ml/gal for a couple of days (1100 EC 6.2 PH) watered until 10-20% run-off light dimmed to 50000 Lux using a Lux Meter Normally I would have topped them 2 days after transplant, going for a mainline training like this: https://www.cocoforcannabis.com/how-to-mainline-cannabis-plants/ But I decided to delay a couple of days to have more space between node 3 and 4 to leave a stump