tips of leaves are black

just the very tips.
WHAT DOES THIS MEAN, oh and can I just water my plant everytime it "looks" thirsty or should I have a schedule for them. oh and can anyone post pictures of what a plant looks like when it first starts the flowering period

not sure maybe its burnt maybe its mold did u spray anything on it while the lights were on? it mite have just somthing on it give it a spray with water while lights are off that pic u should find on this site with a little browsing i guess.

if your plant is just starting to flower it will have little white hairs where the buds are starting if its female male will develop small pods no hairs.