Need help please

1st week of flowering and my tips are brown and leaves are curling downward. Don't know what's wrong
Everything was fine I feed them every week and water her every 2 to 3 days. I'm lost and really need to be found.

Pass dadutchee pon de lef hand side.

Sorry bout the last pics, I hope these are better. My camera sucks!

these pics are waay to far away from the plant.

Just put some more pics up hope they help.