true - my concern is about the slow growth too, but like you pointed out, the root structure might be doing its thing right now.comparing against your 1st posted pic there is growth, albeit slow, but it is growing...
yeah, I now realize that I might have made a mistake by going with this mix (this is what I use for all my veggies and they seem to love it). Next grow will be in just coco (buffered) and a bit of perlite.coco peat + compost + soil mix is a little vague. so can't get really sure how soil ph is going to be. just keep the water ph around 6 to 6.5 and it should be ok.