Results 1 to 5 of 5

Thread: Marks on leaves

  1. #1

    Join Date
    Aug 2018
    Posts
    106
    Thanks
    94
    Been Thanked: 272 Times

    Default Marks on leaves

    I have a Critical 2+ Auto 34 days since seedling. It's been growing fine in BioBizz AllMix with no added nutrients. When I went to check this morning I saw these marks.

    I noted yesterday that two of the bottom leaves (not the cotyledons) had withered and browned but I attributed this to sunlight deficiency. I fed this morning with 1ml Bio bizz Fish Mix per litre of water, the first feeding the plants have ever received.

    Grow area is 22 degrees today but I plan to bring temp up with a greenhouse heater so hopefully it will reach about 25 later. I have a heating pad under the plants.

    warm regards

    Richard
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	mark on leaves.jpg 
Views:	35 
Size:	55.8 KB 
ID:	366813   Click image for larger version. 

Name:	mark on leaves2.jpg 
Views:	43 
Size:	52.7 KB 
ID:	366814  

  2. The Following 4 Users Say Thank You to plasticdollman For This Useful Post:

    Ben.g (15-10-18), CityDweller (15-10-18), GEORGE (24-10-18), millwall115 (14-10-18)

  3. #2

    Join Date
    Dec 2017
    Location
    South uk
    Posts
    2,060
    Thanks
    1,521
    Been Thanked: 8,141 Times

    Default

    I reckon it’s a calcium deficiency. The photos are quite poor to be honest. Maybe a photo of the hole plants with lights out will be good. Other than the spots the leaves look nice and green.
    Are they flowering yet? I would hit em with an calmag foliar feed, 2ml per litre.

    If I can remember rightly I had the same problem when I started in biobizz allmix.


    No one like us we don’t care. #upthelions

  4. The Following 4 Users Say Thank You to millwall115 For This Useful Post:

    Ben.g (15-10-18), CityDweller (15-10-18), GEORGE (24-10-18), plasticdollman (14-10-18)

  5. #3

    Join Date
    Aug 2018
    Posts
    106
    Thanks
    94
    Been Thanked: 272 Times

    Default

    Thanks. I tried to take better photos but they came out blurred. Now I have the grow area sealed until morning (to avoid odor spread throughout house). I am not sure what stage they are at. If you can tell me based on these other, blurry, photos please let me know.

    I ordered Calmag stuff from Amazon. Arriving tomorrow. Is the foliar spray a one off thing? I have 4 plants. Should I spray them all? How liberally should I spray?

    Thanks so much.

    R
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	20181014_091339.jpg 
Views:	27 
Size:	61.6 KB 
ID:	366817   Click image for larger version. 

Name:	20181014_091347.jpg 
Views:	23 
Size:	67.7 KB 
ID:	366818   Click image for larger version. 

Name:	20181014_091355.jpg 
Views:	35 
Size:	59.8 KB 
ID:	366819   Click image for larger version. 

Name:	20181014_091413.jpg 
Views:	30 
Size:	46.9 KB 
ID:	366820   Click image for larger version. 

Name:	20181014_091431.jpg 
Views:	28 
Size:	49.5 KB 
ID:	366821  

  6. The Following 4 Users Say Thank You to plasticdollman For This Useful Post:

    Ben.g (15-10-18), CityDweller (15-10-18), GEORGE (24-10-18), millwall115 (14-10-18)

  7. #4

    Join Date
    Dec 2017
    Location
    South uk
    Posts
    2,060
    Thanks
    1,521
    Been Thanked: 8,141 Times

    Default

    They are in flower. I don’t know if I would risk giving them a foliar feed at this stage as you don’t want to encourage rot. Maybe feed through the roots. Feeding through the roots will take longer to take effect.
    If those bits are small and fluffy like you could still give a foliar feed but just don’t spray the buds direct.
    If you go down the foliar feed route then get a spray bottle, fill it up with 1L of tepid water put in 2ml of calmag in give it a shake then spray the plants. Make sure you spray under the leaves aswel as the tops. Give em a good spray.
    I tend to do this just after lights go out. Also lift the lights right up high until the plants are dry then lower back down to there normal position. The reason I do this is because water droplets will cause the light to magnify and burn the leaves.
    I would do this to all the plants.
    I’m not to sure on wether or not foliar feed is
    Your best option as I can’t quite tell on the bud size/density. Someone with more experience will pop there head in shortly.


    No one like us we don’t care. #upthelions

  8. The Following 5 Users Say Thank You to millwall115 For This Useful Post:

    Ben.g (15-10-18), CityDweller (15-10-18), GEORGE (24-10-18), plasticdollman (14-10-18), WF420 (14-10-18)

  9. #5

    Join Date
    Sep 2012
    Posts
    2,798
    Thanks
    17,391
    Been Thanked: 8,097 Times

    Default

    Are those spots on the bottom leaves?

    In your third post with 5 pics... On the second pic I can see water drops sitting on the leaves.

    If your using hps or high power LEDs it could be causing it to magnify and burn/mark your plant.

    If it's further up away from where you water than it won't be that.

    You have cal/mag on the way though, so your covered

  10. The Following 3 Users Say Thank You to Ben.g For This Useful Post:

    CityDweller (15-10-18), GEORGE (24-10-18), plasticdollman (16-10-18)

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
  •  


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 and some US States