White widow

Iron def, really common,if you are giving the correct amount of nutrients and your PH is ok look for a Fe chelate (edhha o-o if possible because it works at wide ph range), you can spray it or give it trough roots, the 2nd one is obviusly slower, if you want to see a fast recovery spray them and if you see that they recover quick add a little amount 2 weeks after trough roots to enhace de availability trough the rest of the grow. Always follow the instructions prior use and adjust the amount to the grade of deficiency you have usually the dosages are greater for foilar application and much fewer for root application so keep that in mind.

Hello mate i think your plant is bigger enough to switch at the flowering phase. I see the same when i used the biobizz product, after a long veg phase, without know which was the rate of Ca/Mg, the plant start to have a ligth green and problem with pH. So i advice you to check this rate in your water. Good luck and happy journey!

You have covered a d3cent area and got a good shape to her. Pot size is big enough. I'd say its time to flip to 12/12.