Yellowing of leaves

So after the flush and soiled dried up I fed plants again, solution TDS 840, PH 6.3 I tested the first runoff and its TDS 605, PH 5.8 I think the flush worked for nutrient lock, I will monitor it for the next couple of feeds.

I checked the ph, the solution ph was 6.1 and the tdc was about 760, then I checked the run off and the ph was about 5.8 and the tdc was 790, so I performed an flush as I think I got a nutrient lock, I'm leaving soil to dry now will water again tomorrow and recheck, I will add half bloom and half grow for 2 weeks and see if their is progress, yellow leaves is not pulling off at all.

I'm using soil and water with tap water. Feed floranova grow at 700ppm ph is 7, feeding every/watering ever 4 days. I will check ph off runoff.

Bnjour, Je dirais que tu as un carrence de calcium ! Prévention • Ajouter de la chaux dolomitique/de jardin à votre substrat de culture. • Un pH de 6,2 offrira un meilleur environnement pour l’assimilation du calcium. • Ajouter beaucoup de coquille d’œuf à votre compost biologique. • Lancer une ferme de lombrics ! Le lombricompost offre un tas de nutriment, y compris du calcium. Solutions • Appliquer un booster cal-mag. • Augmenter ou diminuer le pH pour atteindre 6,2. • Ajouter une cuillère à café de chaux hydraté dans 4 l d’eau et utiliser la solution pour l’arrosage de vos plantes. J'espère que cela va t'aider

Hey add some food to it bro 👍

it looks like a bit of a mix of multiple deficiencies.. which is what usually happens.. the yellowing of the older leaves is usually a nitrogen issue, the brown spots can be calcium.. How many nutrients are you giving the plant now and what growing media is this exactly? What type of water are you giving the plants (is it tap-water or RO?) and what's the EC and PH? If you have an EC meter, i would suggest to measure the EC of the nutrient solution you give to them, and then to measure the run-off. If the EC is lower in the run-off, then you should feed them a bit more. If the EC is much higher in the run-off then you might have overfertilized them and they went into a lockout (unlikely if you say you hardly water them). If you're using RO water and not tap-water be aware that you have removed all calcium and magnesium, and you need to manually add calmag to it prior to mixing the nutrient-solution. Without knowing any real details, i would say you should feed them a bit more nutrients, but check the EC to verify it. Especially when they're only in the 3rd week of flowering you wouldn't want to keep nutrients from them, else you will hinder them from forming big buds.. (but don't try to correct it by overfertilizing either!)