Serious Problem Help

[greenerworld]

HERE ARE SOME OTHER PICS OF MY LEAVES 1st I have three major plants 2 of which are experiencing the leaves curling and now I'm noticing black spots on them. The other plant shows no sign of any problems. The two plants that are having problems I cut some of the large fan leaves off to expose the under growth to more light - could this be the problem?? the other plant I left alone and it's fine!! After posting some pics earlier some advice I got was to transplant them into larger containers which I did and other advice was it could be over watering and another was a deficiency of some sort mag. or calcium!! Ikeep refering to the 3rd plant because it's completely fine. Why the two I trimmed and not the other??? My set up is:
400w MH
2 26w cfls
Miracle Grow Soil
20-20-20
2nd week flowering
Please SomeOne Help Me With This If You Can I've come to far to loose them now Thanx

 

[Hick]

..I'm sure it's been posted here 100 times..."Don't cut off healthy leaves"...
..that "claw" effect, usually indicates over fertilization.
MG soil..AND 20-20-20 ferts 'maybe' more than they need.

 

[greenerworld]

hey hick thanks for the info!! I've tranplanted them into larger pots and found that the dirt and roots were saturated with water and a little root bound... They don't look any worse today I hope it was'nt too late. They were in the 2nd week of flowering, would transplanting them hurt the flowering process??? I hope not!! Also I don't really see any signs of sex yet is it strange for the sex not being evident at this stage???

 

[THE BROTHER'S GRUNT]

Whats up man. If your gonna use MG soil you have to be very careful about the nutes you add to the soil. What you have to remember is that the soil already has enough nutes in it for 3 months. We use MG soil and don't add any nutes until week 3 of flower and when we do it's very small doses. Like 1/4 Tsp. per gallon of water every other watering. If they take it well then we will up the dose to 1/2 Tsp. per gallon of water every other watering. I myself would ditch the MG nutes for something better like Fox Farm. Also you say you are 3 weeks into flower and you see know signs of sex yet? Do you have any light leaks in your flower room? Do you have any perlite added into your soil to help with drainage?

 

[greenerworld]

Hey TBG no light leaks in the grow room I'm sure of that. No perlite in the soil, these plants have been strange from the start, the largest foilage I have ever seen, @ 4 inches high the width was over 9 inches the fan leaves got so big I had to stake them early until they got the height goin. will the transplant hurt them during the flowering period? Do you think they'll hermie from the stress??? Thanks for the reply and the advice I'll get pics up in the next few days.