MyFIRST-MEDIUMBUDGET-HOMEGROWING

MMM... the girls don't look very well... they have a strange fade on the center of the leaves, maybe magnesium deficency, i think my water is poor of that, i can tray to add it for prevention. THE PARAMETER OF MY BOX I have a cultilite 300w (but are less maybe 220)setted on 50%, is 55 cm from the plants, but I moved now and before was at 35-40cm (maybe this was one of my issue, you can see the picture). the extraction is setted on low potency and is turned on 15min off/30 on with passive intake, the box is near the window opened most of the time, in the next days I will create something to put the air from out, do you think is necessary? the room is my bedroom and I smoke in there. there is one fan I have a thermo ighrometer. the plants will grow in 4 30 lt. smart pot,, filled with biocanna professional plus and 10% of expanded clay and 4 spoon of bactogel of agrobacteria brand (a mix of michorrize and rhizosphere's bacteria on a pholimer inerte crystals and leonardite e zeoilite, I think they will help me a lot, a will add them directly on the roots to boost the radication (grower says it's a crazy trick that works very well) . for the fertilization i opted for plagron terra grow terra bloom green sensation root power pure zym and sugar royal, i have biobizz calmag too ------- next day------ (Ill write this thread over the days, so there be few updates, I want to take note of everything) the problem on the leaves doesn't want to go away, this week I watered with only water, and bought the PH meter en EC meter, I don't know if is a good meter, was low priced, bytheway I bought it on amazon so I can raplace it, I will add calmag on the next irrigations, i'm taking picture every day , maybe someone will can help me.