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Thread: Day 50 Auto's Yellowing

  1. #1

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    Default Day 50 Auto's Yellowing

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    Soil or hydro or coco: Biobizz Allmix

    Strain: Gorilla Glue Auto

    Photo or Auto: Auto

    plant age: 50 Days From Seed

    pot size: 11 Litre

    has it been repotted? and when?: No

    soil type: Biobizz Allmix

    nutes or additives used and how often for soil: Grow / Bloom / CalMag

    Air temps (max min): 27 / 18

    Res temps (max min): N/A

    humidity: 45%

    lighting type and wattage (hps, led, cfl): 600 HPS

    Light schedule: 18/6

    ph level: Never Checked, Soil



    Hi guys, been outta growing for around 3 years due to a fallout with a mate? who threatened to open his mouth, anyways, Gorilla Glue Auto's, 50 days from seed, just noticed that they started yellowing, which seems to be spreading rapidly over the plant the last 3 days. I feed 'em every 3 days, when pot is light.

    Had them on fish mix at 1ml / litre from day 21 until around day 35, with CalMag every 3rd feed, then moved over to 1ml Grow / 2ml Bloom per litre from day 35 on. Last couple of feeds has been 1ml Grow / 3ml Bloom as they stopped streching around 10 days ago.

    Thinking I've either not given enough N and now they hungry? but to be honest, it's my first grow in years so don't really want to start trying things without asking here first?

    Any ideas would be great, thanks

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  3. #2

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  5. #3

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    thanks for the reply mate, I'll give 'em a bit more next feed

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    As you're probably well aware,it's pretty normal for some of the leaves at the bottom of the plant to start yellowing as the plant uses the nutrients in the leaves to help with flowering. I did notice you have some curled up leaves though, which can be a sign of heat stress but wait for someone better informed than me to maybe give you some better info.

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  9. #5

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    nice one, I did have some bleaching of the top leaves earlier on and had to move the light up. It can't get no higher now and I've had to tie the tops back to the bungees running along the side of the tent.

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    I would try and up those lights off temps up a bit mate, around 20-22c would be ideal, and would shorten the on/off temps swing. Looking at the plant i do not see the usual signs off heat stress ie sidewards rolling of the leaves to retain moisture, nor do i see any upper bleaching, burning, or discoloration other than the obvious ones. From memory coldish temps can play havoc with the uptake of P,K add is a slightly too close to lights on top and this could be causing the demand for more p,k...

    I dont think nitrogen is a problem here, more p.k The leaves have a nice green look to them from here and considering these leaves have turned yellow upper to middle of the plant i call for P,K i can also see a fair few pinky, purple hues to a few leaves.

    Just increase your bio bizz feed? is it bio bizz? If so these bottles are meant to be used together, ie 1.5ml grow, 3.5ml bloom. Hell a nice splash of black strap mollases wouldn't go amiss. You can find the right stuff from a company called meridian they have a wicked jar for around 3 quid and will last you several grows. This mollases stuff is really kinda like a organic boost and also gives your microherd a lovely meal that will have them going nuts.

    Best of luck mate
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  13. #7

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    thanks for the info mate, I ended up flushing them 3 days ago and waited until the soil dried yesterday, given them 2ml / l of Fishmix and 3ml/l of Bloom to see how they go. Pretty sure the Fishmix has Molasses in it, cheers again ;

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    Quote Originally Posted by SmobyToker#1 View Post
    I would try and up those lights off temps up a bit mate, around 20-22c would be ideal, and would shorten the on/off temps swing. Looking at the plant i do not see the usual signs off heat stress ie sidewards rolling of the leaves to retain moisture, nor do i see any upper bleaching, burning, or discoloration other than the obvious ones. From memory coldish temps can play havoc with the uptake of P,K add is a slightly too close to lights on top and this could be causing the demand for more p,k...

    I dont think nitrogen is a problem here, more p.k The leaves have a nice green look to them from here and considering these leaves have turned yellow upper to middle of the plant i call for P,K i can also see a fair few pinky, purple hues to a few leaves.

    Just increase your bio bizz feed? is it bio bizz? If so these bottles are meant to be used together, ie 1.5ml grow, 3.5ml bloom. Hell a nice splash of black strap mollases wouldn't go amiss. You can find the right stuff from a company called meridian they have a wicked jar for around 3 quid and will last you several grows. This mollases stuff is really kinda like a organic boost and also gives your microherd a lovely meal that will have them going nuts.

    Best of luck mate
    Hi tlh2496 I'm inclined to agree with SmobyToker#1 I have a similar setup but using LEDs, I have the same problem with one my plants, doesn't seem to affect the buds.
    Girl scout cookies. My soil is light mix I've been feeding 1ml grow, 3ml bloom, 1ml topmax, 1ml molasses and tsp Epsom salts per ltr , 2ltrs per dayfor 2 days, 2ltrs with Epom salts and molasses day 3 then back to normal. Have a look at my diary in newby corner, good luck, and happy Christmas.
    So much to learn, so little time to learn it

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  17. #9

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    nice one! gonna up the Bloom to 4ml/l tomorrows feed, see how they take it ;

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  19. #10

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    Just done the same to the large one of mine but the other I'm flushing. Both cracked the same day but one's a bit lazy so I'm giving her extra sweeties

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