The short one is looking good, with a nice, big cola (for her size). Some pistils are turning brown now. The tall one looks like she is behind a couple of weeks. Many yellow, spotted leaves fell off.
Im growing Q1 plant its almost 3 weeks old now and i used almost no nutrients at all shes doing fine (only twice with 1ml Biogrow from Biobizz per liter and 1ml of Ionic calmag per liter). I think you are just giving them too much nutes and its a low nute strain. Dont feed with every watering i guess.. Once you overfeed it gets confusing because it could be anything but its a nute lockout 90% ... Which soil did you use for grow ?
Happy growing! I hope you get some good results! Take care and stay lit! I will drop by sometimes to check on your process! Say hello if you ever visit my page!
Peace & Love - L.S.T ππΌπ