I continue to water with 1 EC, I will be careful with the food, because they have some claws here and there, and they have a slightly longer flowering so yeah. The long king is showing a slight magnesium deficiency on the lower leaves and I'm thinking of getting Epsom salt to try and see if that works and also maybe raise the PH a little to 6.3-6.4 I feel like they can't absorb it, not that it's not there. In the PK supplement from greenhousefeeding, which I will provide from the 3rd week onwards, there is additionall magnesium. The lamp is at 64% 40-50cm from most of the plants, only from the long king it is around 30cm , but there is not a speck of light stress, so for now they are ok.
I had the same problem that you had, of 10 seeds only 2 popped. The other ones died after developing a tap root. I wrote an email to Greenhouse and they instantly shipped me a refund of 10 seeds. Maybe try telling your problem to Greenhouse;)
@Spiral, I think they still would give you some refund seeds. I ordered my seeds in summer when it was very hot. To much heat can potentially kill the seeds...
@Dr_Doppeldecker, I don't think there is any point to this because i bought them 4-5 months ago, i've kept them in a fridge since then to keep them fresh, and they were fresh to be honest. Just somehting happened when I planted them😣