Tagreanswered grow question 5 years ago Let us assume that at the end of the grow the leaves are wont to lose their brightness and their liveliness to encourage the development of the buds.. anyway in your pics the leaves seems like burn, It can be a K problem, has u gave compost tea, that Is very Rich in P and K, May Be that your plant Is in over fert ok K. In the last week you should gradually remove all nutrients arriving giving it only water ( or flush). Try to feed your plant