New grower need advice. Pictures attached!

[cigarettes42]

Well like I have been using rainwater at the moment to avoid any unwanted chemicals in my plants.rainwater is safe yeah?

kinda depends where you live. air pollution is a factor. you could live in the cuntry and have lots of pollution from fire places. rain cleans earths sky of particles. anyways also rain water is very very acidic! and you will have to most definatley have to add cal-mag to the water because it lacks those things. you are honestly better off using tap water that has been sat out for a day prior to use. thats probably why one of your leaf tips look brown. lack of calcium.

[Alfiecarted]

cool thanks cigarette42 i will keep to my tap water. To be honest my tap water is really good and is tested most months so i will keep using it thanks man i will post any more question when i have one.