What has happened to my plants?

Discussion in 'Newbie Central' started by CBDseeker, Jun 3, 2018.

  1.  
    CBDseeker

    CBDseeker Member

    First time grower here. Growing with coco, 5x5 tent. 12x4ft bridgelux strips

    Started off with problems as I didn't make the drainage holes properly. Eventually I changed them to bigger pots and gave them a feeding. They loved it and thrived and all was right in the world.

    After a week or so I gave them their second watering that wasn't just PhD water. My local hydro store guy said for the next watering to give them cal mag. Everything since then has been chaos.

    After watering with them with cal mag they completely stopped growing, and the back left one started getting some kind of disease or something happening to it then I started doing stupid things in a panic like feeding them again and then flushed the messed up one etc. Now the other 3 have started having black dots appear on the leaves

    Last time I watered these I watered all 4 with calmag. I would love to hear what you all have to say about the pictures I'm posting such as:

    what the really messed up one had going on with it,

    what the black spots are on the others,

    if I should just be feeding them everytime or doing a watering of calmag in between

    Any sources for things that i should read or watch to level up my knowledge on growing marijuana in general.

    I know this crop is probably not going to end well but I would like to learn as much as I can with this batch before starting on a next batch

    Thank you very very much in advance for your help.
     

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  2.  
    whitebb2727

    whitebb2727 Well-Known Member

    Chronic under watering. Feed them with a grow or veg nute.
     
    Jimdamick likes this.
  3.  
    Xs121

    Xs121 Well-Known Member

    If you're having high humidity issue, those black spots could be sign of fungus infection. Hope I'm wrong.
     
  4.  
    CBDseeker

    CBDseeker Member

    I
    I have been keeping my humidity crazy high. Where should the humidity be at? Also what so you think is wrong with the really bad one?
     
  5.  
    ukflowzy

    ukflowzy Member

    Looks like a zinc/ magnesium deficiency! I’d say start again if I’m honest! Maybe try watering your plants every 3-5 days depending on how dry the soil is with about 300-500ml of water( water when the top layer of soil looks dry) better to slightly underwater than over water imo! Water then like this for first 2-3 weeks! After 3 weeks add low amounts of nutrients! Then water the same every 3-5 days with 500 ml! After 6 weeks water with around a litre and this should be fine! This works for me anyway dude
     
  6.  
    ukflowzy

    ukflowzy Member

    I religiously water mine every 3 days no matter what! But the first few weeks it was every 5 days! You just gotta be careful as there’s no guide just let the plants tell you when they need a water
     
  7.  
    Olive Drab Green

    Olive Drab Green Well-Known Member

    They are either overwatered or homosexual. Your guess is as good as mine. :eyesmoke:
     
  8.  
    CBDseeker

    CBDseeker Member

    Are you growing in coco? Also if you are, would you not end up with nute burn if you're only watering them 500 ml each time you water them? No way a full grown plant is going to get 10 percent runoff with 500 mls no?
     
    ukflowzy likes this.
  9.  
    ukflowzy

    ukflowzy Member

    The 500ml is only for first 3 weeks ish! Just up your watering amounts I till there is decent run off! I water with about 2-3 litres atm every 3 days! 3 litres to the bigger plants and the ones by fans etc as they seems too dry out faster! Well no, no nutrient burn as if your bottle says 40ml per 10l you’d use 4ml for a litre and then 2ml for 500ml? Your best bet is too get a 10L tank and make it up for a fair few waters but I’d recommend only putting in half of what your bottle says and just up them gradually after 5 weeks ish
     
  10.  
    ukflowzy

    ukflowzy Member

    Yes coco btw
     
  11.  
    whitebb2727

    whitebb2727 Well-Known Member

    Dude. Serious. Chronic under watering.

    That's a smart pot. It dries out faster than regular pot.

    You need to water thouroughly. Water until the point of good run off. Water twice. Water lightly and then again in about ten minutes.

    I see signs of under watering in the pics. Limp leaves.

    Soil can develope dry pockets that become hydrophobic.

    Put the pots in a bowl or gray and water with plain water and let the pots sit in the water until the soil sucks it all up.

    Your next watering feed them good.

    I've seen this and done it myself.
     
    CBDseeker likes this.
  12.  
    Xs121

    Xs121 Well-Known Member

    You have to give us your info, like....

    What's your RH...crazy high is not a specific data
    What's your temp
    What's your runoffPH and/or EC
    How often you water
    What else are you feeding your plant?
    Light?

    In other words dude...walk us to your grow room...we're not there....the more detailed info you can provide, we might get a chance to diagnose your problem right......otherwise...everything you read here is just guesses on our part.
     
    Jimdamick and CBDseeker like this.
  13.  
    CBDseeker

    CBDseeker Member

    My temp is usually around 80f.

    Humidity usually around 80rh

    The water I put in when I flushed the one that's really bad was a ph of 6.0 (no nutes)
    What came out first bucket was 6.7ph-677 tds
    Second bucket 6.8-530tds
    Third bucket 6.9 -466 TDs

    With other plants last time I watered, the water going in was 5.66ph 250 tds(calmag) and came out 6.6. Tds or one plant was 450, other was 500.

    Here's the foods I use.

    Let me know if any other details would help
     

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  14.  
    CBDseeker

    CBDseeker Member

    Thanks for the tip I'll make sure to give em water more often. I dknt understand your third last paragraph about the bowm though or when I should be doing that.
     
    whitebb2727 likes this.
  15.  
    whitebb2727

    whitebb2727 Well-Known Member

    Air pots can be hard to water. You place a drip tray under the pot and water them and leave the run off. The pot sits in the water that drained through and soaks it up.

    Only do it with pure water. Doing it with nutes can cause salt build up.

    Soaking allows the soil to wick or soak the water up and rid any dry spots.

    The black spots are necrosis. Without proper watering the plants will cannibalize the lower leaves.
     
  16.  
    whitebb2727

    whitebb2727 Well-Known Member

    Soil needs a wet to dry cycle. As soil dries the pH swings to allow proper nutrient uptake as different elements are uptaken at different pH.

    Too wet or dry causes a pH problem on top of the watering problem.
     
  17.  
    Jimdamick

    Jimdamick Well-Known Member

    Your humidity is way too high, try too bring it down to 60% (fans help).
    It doesn't look like underwatering too me, but it definitely needs more Nitrogen.
    Are you adding Calmag (it has added N) to your nutes?
    With coco it should be added once every 2 weeks.
    So, I would recommend bring your humidity down, use fans, and bump up your nutes and add Calmag.
    That should help.
    Good luck
     
  18.  
    CBDseeker

    CBDseeker Member

    K so I lowered the humidity and gave them a full feeding. I got new growth and most of the plant started to perk up, but the bottom leaves started to get weird(pictures attached) and even the the top leaves are weird colouring(bright spots)

    What you guys think they need now, or are getting too much of?

    And thanks for the help so far :)
     

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    Capn-Crunch likes this.
  19.  
    CBDseeker

    CBDseeker Member

    Any input on the updated pictures after feeding em again?
     
  20.  
    CBDseeker

    CBDseeker Member

    What you think about the updated pics?
     
    whitebb2727 likes this.

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