Fast Buds - Purple Lemonade

Week 3 - Day 14 First day of week 3! The two biggest are going strong. Slight discolouration, might require another feed. Will rest run off EC today on all plants when feeding the sad looking one shortly. Will pass through 2-3L for small run off, still worried that we did not PH buffer the coco correctly hence why we are seeing a high PH run off of 6.8?? Decided not to feed as the pots are still heavy and the coco feeling moist still for over an inch deep. Week 3 - Day 15 Two are looking rather sad, one droopy one very stunted. Chose the droopy one and fed 4L to achieve decent run off to test; 5.8PH@600PPM. Results, 478-501PPM 6.6PH. Don’t understand why it is droopy, has been this way for 2 days. Help please! Have I overwatered it? Out the top two, one is more yellow than the other - can’t work out if it’s a deficiency or not. Maybe excess in phosphorus?? Due to new growth being yellow on the inner leaves and between veins, along with the thinner leaves? The second, greener but has a small twist in the growth - boron? Fed all plants with 4L 5.8@340PPM for a PPM Reading. End Readings of; 350,400,404,450,430,427. Tailored the outcome to the size of the plant, the previous fed of near 500 max was too much. This should hopefully stabilise them now🤔🤞🏻Been using tap water along with RO for micronutrients. End of day: looking much better! The droopy one has perked up😁 tiny one is showing very small signs of growth. Will just have to take extra care. Week 3 - Day 16 Mixed tap water/ RO added 0.2ml/L of Calmag. Will feed about 1L per plant to boost calmag intake and micronutrients 5.8PH@ 175PPM. Week 3 - Day 17 Feed day! Going for 1-2L per plant. 5.8PH@500PPM. Getting a nice little bit of growth showing now. Week 3 - Day 18 Fed 1-2L of 5.8@330PPM, just used tap water/ RO, to around 200PPM then added calmag 0.2ml/L, Roots excel 0.3ml/L. Week 3 - Day 19 Feed day! Will give 1-2L per plant again. 5.8@ 400-500PPM.