Quick one

**** Day 29 **** Two girls have already tiny white hears. The one on the left corner not. As you read before one girl (right corner) is suffering from yellow tips. Strange because I treat them all the same. Maybe it's the position. So I changed it. Fan is going every twice every hour for 15min. The active carbon filter runs 18h a day. The girl in the front is a little underdeveloped, maybe because she is getting not the enough light? **** Day 30 **** I think the Mars TS 600 is not enough for 3 plants. For the next grow i will add a second lamp or grow just two plants. Yellow tips are going to be a problem. Don't know how to resolve it. What do you think about a nutrient burn? Gave until now in two weeks an amount of 14ml NPK divided on the 3 girls. This is the only possibility.. But strange that only one plant is affected. **** Day 31 **** Yellow leave problem is getting worse... What do you recommend? Cutting this leave (see picture)? **** Day 32 **** I tired out DEFOLIATION on one of the plant. Add some picture of day 32 from the healthiest plant. As I already told you I treat them all the same. But there are a lot of differences between. Check it out. **** Day 33 **** Left one looks very good. **** Day 34 **** DEFOLIATION was not a good idea. She is not doing well. See picture. The other two stay pretty good. **** Day 35 **** I think the problem child is going to die. There is no hope for improvement. The other two in the picture stay better. The right one is perfect. The other one starts to have similar symptoms. I hope it will not take the same end.