Barney's is a pretty reputable breeder but IDK about their autos, next time you might want to give a shot to
Dinafem
Dutch passion
Or mephisto if you can get your hands on them.
These are known to have very stable autos.
Shes deffinetly under fed then :( it looks like she's struggling to stay alive lol, you didnt replenish via top dress after flushing? anything?
And what breeder was that? the one that sent you photos instead of autos?
He might have saved you some time wasted, the plant looks pale, probably under fed and UNDER LIT. She was on he 4th node and with the body of a seedling.
how old was she? im guessing 3 weeks plus?
and No, it will not grow.
Thats because it's not coming from the UK :) obviously it'll cost a fortune to ship something like that overseas, its basically 2kg of sand in a bucket. try looking for it locally thats the only way.
6.5 is not too quick, its right on the money actually, as far as i know GH is not Ideal for soil, its more hydro specified, never heard of soil grows with GH.