Problems showing up in week 5 flower

I see that all of your leaves are reaching upward. That indicates light burn. Your light is too close. Also, your stems are red. That indicates a possible phosphorus deficiency. P locks out at a ph above 5.8 in hydro.

I’d put a good wager on this that it’s overfeeding.. when you’re in hydro, I would stick with some very simple nutrients frankly..

I wouldn't worry massively plants still look healthy. But I would say it is a PH issue as you seem to be feeding ok. Maybe a bit to much nitrogen . Would try reducing a and b slightly . Probably some kind lock out which isn't allowing potassium to be taken up efficiently . This is why I don't touch hydroponics , heard to many people having problems with fluctuating pH. Much is easier Coco drain to waist problems can easily be fixed some plants can be fed more or less than others . Flushed easier . Hydro I would only try if had clones and they all grew the same.

Hola !!! En floracion avanzada tu planta va a empezar a consumir sus reservas de nutrientes es normal que las hojas se pongan mas claras. Sigue añadiendo nutrientes pero no en exceso. Suerte

Looks more like burning from nutrient over load to me and not a deficiency of any sort. Your list of fertilizers is enormous! 3-5 core ingredients at slightly less than full strength is much better than giving every product in the shop.