White widow/ Royal Gorilla

The ladies are growing nicely. I have done a really stupid thing as on the Royal Gorilla I have been trying to bend the top 2 stems as they were getting much higher as the other 2 but unfortunately i have managed to break one side off. Obviously it was too late to try to do such a thing because the stems were already to stiff.. I think I have managed to save it though, just taped it together and given a little support from the other main stem on the top. Will give further update on it next week when i remove the sellotape. I will have an other 2 week of veg and than I will make them start to flower. I might increase the nutrient dose as I have yellow weak leaves on the bottom with red stems. First I will only increase Cal/Mag and see if that works if not might have to research and ask what could be the issue. Still learning.