top leaves

some reason some of the veryt tops look almost burnt but the tops in the back that are closer to light look good ? im growing in. strictly hapoy frog dirt no fertilizer or nutrients one pot is a rubbermaid tote temps are steady at 78 when light switches off they are all droopy 400 w how help please

I have observed my plants droop after lights out for reasons of stress, healthy plants kept a similar structure at lights out to lights on. Its not typical and walking down a dark road late last night i saw no wilted plants in their dark period which really suggests a stress problem would have to exist to make them so.

Different phenos, stresses, strains and about ten other variables will make one plant grow different to another as well.