hi your lights are defo too close and you are using to much nutrients i have been growing for 10 years. when u get nutrients and they say use 5ml in every 2 litres of water on small plants take no notice of what the nutrients instructions say and use half the dose and not every time you water...
thats fine when the leaves go like that just leave them the leaves are food for the buds just bend them out the way to get light to the buds, when the leaves turn yellow they will fall off, bye looking at the pics it looks like nute burn just flush your plants out and use stilled water for a few...
small ones are blue cheese, big budding ones are the church bye green house seeds and the one on the window is a hemafrodite. tell me what you think of them, the budding ones are 6 weeks into flowering