Results 1 to 16 of 16

Thread: Leaf Discoloration

  1. #1

    Join Date
    Mar 2012
    Posts
    7
    Thanks
    6
    Thanked 4 Times in 4 Posts

    Default Leaf Discoloration

    Hi there and thank you in advance for your assistance.

    I'm new to this forum and am looking for assistance is diagnosing our problem.

    We are in the 4th week of flowering; plant is roughly 3 feet tall and 2 feet wide. We set ph on water to 6.3 to 6.5 and for every gallon of water we use 3/4 tsp of Micro, then 3/8 tsp of Grow, followed by 1 1/8 tsp of Bloom.

    We are experiencing some leaves looking like this photo. We suspect it is a nutrient or ph issue, but need your opinions.

    leaf discoloration.JPG

  2. #2
    mellowed Guest

    Default

    What you growing in mate?

  3. #3
    jimmi420 Guest

    Default

    Looks a bit like magnesium deficiency to me . Disolve a half to a level teaspoon of epsom salts in a litre of water and give a good soaking with your spray bottle preferably when lights are on or just before , repeat it a 4-5 days later and see how you go on, dont overdo it though man, i used to get what looks like the same problem around 3 or 4 weeks into bloom running a ph of 6.2 growing in coco i dropped it back to 5.8 and i haven`t had it my last 2 or 3 crops , is it starting in your older leaves if so id most deffo say megnesium defiency .
    Last edited by jimmi420; 28-03-12 at 11:47 PM.

  4. #4

    Join Date
    Mar 2012
    Posts
    7
    Thanks
    6
    Thanked 4 Times in 4 Posts

    Default

    We're growing in soil and was thinking of increasing my PH. I have to make more water today and am not certain which way to go with PH. I've seen that PH levels for soil should be 6.3 to 6.8 and since we've been at the lower range, thought to raise it.

    Thanks for the assistance.

    John

  5. #5

    Join Date
    Mar 2011
    Posts
    212
    Thanks
    32
    Thanked 67 Times in 53 Posts

    Default

    consider the possibility that youre dealing with a virus or disease. i dont know much about virus indexing, but that doesnt look like a nutrient issue, to me.

  6. Default

    have a look >>>HERE<<<

    i'd say it need to be flushed with ph 6.5 water and epsom salt.
    you might need to do it again in 4-5 days...
    good luck mate hope it works out for ya.

  7. The Following User Says Thank You to LBN For This Useful Post:

    simplegent (29-03-12)

  8. #7
    jimmi420 Guest

    Default

    I not got clue about soil but looking at the ph chart id say leave it at 6.5ph but thats up to you i dont know man , like the guy said it may be a rust fungus , but i dont think so personally , is it starting in your older bigger fan leaves ? if so i reckon its what ive said above ,thats my best stab at it for ya .If you do a flush let your soil dry out before feeding next go . good luck man

  9. The Following User Says Thank You to jimmi420 For This Useful Post:

    simplegent (29-03-12)

  10. #8
    mellowed Guest

    Default

    Look into ph fluctuation mate. That's what it looks like to me. Make sure your ph probes are accurate aswell.

  11. The Following User Says Thank You to mellowed For This Useful Post:

    simplegent (29-03-12)

  12. #9

    Join Date
    Mar 2012
    Posts
    7
    Thanks
    6
    Thanked 4 Times in 4 Posts

    Default

    Thank you all for your assistance. We're flushing and will let you know how it goes. It is on the middle section of the plant more than anywhere else. Mainly the older leaves, though some smaller ones as well.

  13. The Following User Says Thank You to simplegent For This Useful Post:


  14. #10

    Join Date
    Mar 2012
    Posts
    7
    Thanks
    6
    Thanked 4 Times in 4 Posts

    Default Thanks for all the fish ;)

    Plants have returned to normal color. Many thanks here's a few pics. in mid week 5 of flowering


    IMG00019-20120405-0819.jpgIMG00020-20120405-0819.jpgIMG00021-20120405-0819.jpgIMG00018-20120405-0819.jpgIMG00017-20120405-0818.jpg

  15. The Following User Says Thank You to simplegent For This Useful Post:


  16. #11
    mellowed Guest

    Default

    Did you figure out the problem mate?

  17. The Following User Says Thank You to mellowed For This Useful Post:

    simplegent (05-04-12)

  18. #12

    Join Date
    Mar 2012
    Posts
    7
    Thanks
    6
    Thanked 4 Times in 4 Posts

    Default

    We flushed once with PH 7 water then two days later water with nutes again by upping the PH in the water to 7 before adding in nutes, then checked again after nutes which dropped PH to 6.6 - 6.7. Have sprayed with a epsom salt solution 1/2 tsp to 32 oz water. So we assume it was a Mg deficiency as was called out.

    We thank everyone very much.

  19. The Following User Says Thank You to simplegent For This Useful Post:


  20. #13
    mellowed Guest

    Default

    Happy days then. Roll on harvest mate.

  21. #14
    jimmi420 Guest

    Default

    Nice one m8 , glad all is well and your back on track .

  22. The Following User Says Thank You to jimmi420 For This Useful Post:

    simplegent (05-04-12)

  23. #15

    Join Date
    Feb 2012
    Posts
    37
    Thanks
    7
    Thanked 10 Times in 8 Posts

    Default

    If there wasnt a yellow area, I would say it was burning due to heat. Havent seen this before...

  24. #16
    jimmi420 Guest

    Default

    What you mean before it happened ?? you got all sorted now vand no probs ?, 3 to 4 weeks in is when your plant uses alot of magnesium as its fully grown and if you not got ph isnt right its tits up.saying that though i used to suffer this prob and thought is was quite a few things before i got it right fungus being one like was said earlier , but i never had a bad crop even when i had it bad .so yyour plants can take it to an extent as ive had it bad , its just it looks ugly and scary
    Last edited by jimmi420; 05-04-12 at 10:23 PM.

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

buy cannabis seeds  buy cannabis seeds

THCtalk.com Disclaimer - You must be over 18 years old to view/use this site .THCtalk.com does not encourage growing Cannabis or possessing Cannabis. Learning how to grow Cannabis instructions should be for educational purposes only. All Information contained in this web site is for: Historical reference, Scientific reference and Educational purposes only. Visitors to this website are advised against breaking the law as It is illegal to smoke, grow, or possess cannabis in the UK