First Grow (hopefully Fat) Banana (Auto)

09.06. 3-3.5L tapwater total to each plant. PH 7.1 multiple times runoff to get rid of salts and stabilize PH plant 1 runoff: 1. 250ml - PH 5.8 EC: 0.87 2. 250ml - PH 5.8 EC: 1.19 3. 200ml - PH 5.7 EC: 1.24 plant 2 runoff: 1. 300ml - PH 5.8 EC: 0.88 2. 300ml - PH 5.7 EC: 1.23 3. 150ml - PH 5.7 EC: 1.25 plant 3 runoff: 1. 250ml - PH 5.9 EC: 1.14 = watering with PH:7 was not enough; runoff still below PH6; will continue next time *Update* Did mix another litre tapwater (PH 8.1) with 3ml of calmag and fed half of it to each plant 1 and 2. runoff(for both plants roughly the same): 200ml PH: 5.8 EC: 1.64 Magnesium deficiency signs are mostly gone on plant 2, maybe the epsom salt foliar spray did work a bit? upper leaves are still pale Now one older leaf on plant 1 does clearly show signs of magnesium deficiency and I also have 2 more sick leaves Plant 3 still looks good, but maybe first signs of some yellowing on the top. = problem still persists. More and more sure, that it is indeed a nutrient lock due to PH. Hopefully the watering today at least solved a little bit, but I guess the problem will at least persist this week until it is really solved 😥 Its getting warmer outside, very sunny, so humidity did drop to 45-50% and temperature did rise to around 26-27°C xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 10.06. No water today Still no improvement with leaf color Some bud sites below the net removed - the ones on plant 1 already were sticky plant 2 just doesnt stop growing for some reason - 3cm today again 😲 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 11.06. problem got worse, on top of the yellowing, leaf tips became purple and even plant 3 did show beginning of some yellowing. Thats why I did flush the plants yesterday: I did mix 36L of a very light nutrient solution (total EC 0.65, PH: 7.3): 3.4 ml/L Bloom 1.8 ml/L Phosphor Plus 1.1 ml/L Power Zyme 2 drop/9L Super vit 1.3 g/9L Epsom salt Fed all of it to my 3 plants in cycles untill the runoff EC was equal to the input EC. (except plant 3 there EC was still a bit higher, but I was tired and she and her runoff was in much better condition) - This should have cleared any the built up salts and imbalances. PH was 5.9-6 in the end, still not perfect... hopefully this will improve with the next waterings. ------ Still dont really get the epsom salt calculations/chemics, but I found the following values that I will use from now: 1g Epsom salt ≙ 98,6mg Mg Calcium needed: Seedling 60 mg/L Veg 90 mg/L Flower 120 mg/L Magnesium needed: Seedling 20 mg/L Veg 30 mg/L flower 40 mg/L" = my water has 12mg/L magnesium, so according to chatGPT calculation I have to add 0.183 g/L of Epsom salt for veg and 0.284 g/L for flower - but this would change my EC quite a bit, so I'll try to stick to the veg values for now - ALso have to add a bit of calcium, but my main problem is magnesium and thats why calMag is not the right solution for me. Still need a single source of calcium xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 12.06. No water plant 1 does build sugar leaves, buds become sticky and if you touch them, fingers smell REALLY good, but overall smell of the box isnt that great. Probably because of the yellowing. plant 1 still has more sick/dead leaves with brown spots. Did remove all of them because it might be Septoria fungus infection. Shouldnt be a nutrient problem after flush... plant 2 still growing 78cm.. still not a lot of development at the buds... plant 3 bud development is pretty good. xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 13.06. No water Did remove some lower bud sites below the net to encourage plant 2 to develop her main buds Removed more leaves with brown spots on plant 1. More and more convinced, that it indeed is Septoria fungus infection. However, no spread to plant 2/3 so far. plant 2/3 continue bud growth - but it is slowly. Looking forward to drying them out, so that I can give them some real nutrients after the flush xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 14.06. No water - plant 2/3 could already have some, but plant 1 is still pretty saturated, so I did decide to wait with all of them xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx 15.06. did water early in the morning 9L nutrient solution: - did let chatGPT calculate calmag and epsom salt amount to reach 100mg/L calcium and 35mg/L magnesium based on my water values and biobizz calmag (4.2% Ca / 1.7%Mg) in total I did add the following to the 9L bucket: 8.1ml CalMag 0,66g Epsom salt 13.5ml Hesi bloom 7.2ml Hesi Phosphor plus 9ml Hesi Boost = this did result in 0.84 EC and 6.9 PH fed to the 3 plants (2/3 roughly the same, plant 1 slightly less) runoff around 20%: plant 1: 300ml PH 6.2 EC 0.74 plant 2: 400ml PH 6.1 EC 0.77 plant 3: 400ml PH 6.1 EC 0.91 --------------- In the evening I did remove a bunch of lower budsites on plant 2. growth looks pretty slow, so I thought maybe this would speed up development on the main buds --------------- plant 1 got a lot more brown/black spots on the upper/bud leaves. Removing the older leaves didnt help much, Maybe it is indeed some sort of leaf fungus and it already did spread too much. Anyway, looks like the plant is dying soon - I probably give her 1 maybe 2 weeks max. Just hope she will develop/ripen her buds enbough in the coming days. I think that I will stop feeding her now