It looks like you need to raise them closer to the light (in assuming that is fluorescent?) and the addition of an oscillating fan would help with strengthening the stalks...I don't know about them falling over and dying (lol), I've had little skyscrapers like that and they turned out just fine. Worst case, some support will be required for the tallest of them. Sent from my LG-V410 using Grasscity Forum mobile app
Yeah going no to add a fan tonight the light is fluorescent and is sitting very close now and yeah I might add some support too thanks mate Sent from my iPhone using Grasscity Forum