Everything is going very well but there is some holes at leaves and some of them looks like bug bites but i haven't find any bugs or pests. I have also sprayed Canna Cure to leaves.
The Browning looks like a nutrient deficiency, PH is too high for coco should be between 5.5 and 6.2 with 5.8 regarded as the sweet spot. The ec is also little high 1.8 to 2.2 from feed charts.looking back through the veg stage in sure by having such a high ec and PH, the plant has nutrient burn and locked out.