I consider my c99 f2s from joey weed to be some of my most valuable seed stock.
Purchased 2 packs back in like 2008. Grew her out only 1x through the years, and several folks said it was the best cannabis they had ever had........i agreed.
I love seeds,.....its like having a time machine ! :)...
just such a smooth, mellow, fluffy and uplifting high with the cinderella.......
sorry to get a little side tracked here DGF, but were at least still on topic with the cindy ;)
this might be waaaaaay out there as a possibility to your problems:
I dont like the look of what you are using for ventilation ducting....That cheap white plastic hosing that I think is intended for dryers....
Its not likely but possible that plastic is 'off-gassing' and your plants dont like...