Hi SF ,
Thank you for the comment ,
I think those are the same pot you use ;10cm square ones.
For my feeding i just recently used some Alg a mix from bio bizz:
NPK 0.1/0.1/0.1 on foliar only .Soil got enough nute left in it .
As far as toping , i dont know yet might go LST with some string on the main stem pulling it down really simple...
Some are still looking small and ragged but overall iam very pleased with those seed.
Love them for sure !