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Found 39 results

  1. Hi, To cut a long story short, for now I can only get away with a microgrow under my desk. I am growing in a propagation tent 60cm tall and long and 40cm wide. My plants started off fine, but have become very yellow and burned looking and bud growth has slowed as all the fan leaves are falling off. It's way too early to be just because of flowering imho. I would have boosted nutrients, but with the burn at the tips, that'd seem like a bad choice. I've dropped the light level down by 30% as I think the light was too intense at the distance from the flowers, I've also switched to plain correct pH water for a watering as the tip burn has always meant too much in the way of nutrients in previous grow. I have insufficient experience of growing indoors and in strange circumstances like a micrgrow, to make a good judgement about what to do next. Can you tell by the photos what might be wrong? I'd really appreciate some advice before it is too late! (Much more detail below if you want it, or skip to the photos at the end...) ------------------ My circumstances and location mean that it is impossible to grow unless it is very well hidden and camouflaged. I figured I'd see if I could quietly grow indoors under my desk. I realised at the time it was a fairly big ask, with slim-pickings and problems along the way. Anyway... My plants are all turning yellow and crispy. Please see photos at the end and offer any advice you can? More Background I had to make an ultra quiet and small grow room, which I did, using a propagation tent that fits basically under my desk. It's only 60cm tall and 40cm wide. I figured if people can micro-grow in a PC case, I could grow in that. I bought 2 sets of controllable 12cm PC fans for intake and a cooker hood carbon filtered-exhaust. I have a USB deskfan clipped to an internal pole to provide breeze. Temperatures in the tent range from 22c to 29c and RH from 30% - 60%. So far, so not bad - thanks Ona gel. I would have used my rhino filtered inline fan, but on trial it was far too noisy and the filter takes up most of the upper internal portion of the propagator, where the LED light needs to be. I bought Royal Dwarf and Green-O-Matic varieties because they cover a spread of sativa / indica vibes and both stay under 60cm tall. With my fabric pots about 22cm tall and the 100W LED (SF1000) light tied to the ceiling of the tent, I had about 38cm between the pots and the light. I used a mix of about 60% compost - not enriched artificially, 20% Canna Coco Pro and 20% Perlite. I germinated the seeds with the LEDs at about 50%. I LST'd them as soon as I thought it viable, though the GOM was tough and woody from a very early stage and I was loathe to risk breaking it. In hindsight I should have probably risked lower yields and fimmed the buggers at the 4th node perhaps? Anyway, I stepped the light up, bit, by bit until it was at about 90% power. Everything went well for the first 3 weeks or so, despite a little leaf twist here and there, but on the GOM that happened with the very first set of leaves, so I thought, ho hum. Very quickly a few leaves began to show some bronze spots and yellowing / crisping. I had been pH-ing the water to about 6.5 (down from 7.8) and the run-off was about the same, so I figured it wasn't pH. Saying that, a cheap garden-centre probe records the soil pH at about 6.8. I started using some Biobizz Grow at 1/4 strength with each watering and introduced some CalMag at about 1/2 strength. our water is soft, so I figured the brown spots and crisping might be solved with that. Nope. I realised I hadn't been leaving the soil to dry out quite enough. The top inch was dry, but the Royal Dwarf still had leaves dropping down, so I have spaced watering out about 2 days more, flood and drain. The plants are off the saucers, so aren't sitting in water. The leaves are no longer drooping. However, they are getting a bit jaundiced looking. The problem continued into flowering which became noticeable by week 4. The odd leaf was easily removable and I added some Biobizz Top Max and Biobizz Bloom into the mix. The leaf tips were yellowing a touch, particularly on the Royal Dwarf, but both had more fan leaves going yellow and bronze, some at the bottom of the plant, some at the top. Skip ahead to now, around week 6 since germination and I increased the nutrient dose a little. Still only 1/2 of the recommended dose, even for Autos in a standard soil mix. However, many to most of the fan-leaves have now come off. These plants finish in 8 - 10 weeks, so I will soon be at the stage where I'd expect to see some leaves going south during mid to late stage flowering. But this would seem to be a problem. With the flowers now only 10-15 cms from the light max, I have turned the light down to about 75% as that seems a comfortable level and I figured it will reduce the chance of burning, fox-tailing and so on. I just figured that even if I was getting nute-burn (as the tips suggest I am) then the variety of nutrients I am feeding the plants should have sorted out the leave spots and yellowing, but it hasn't. The leaves that are affected were and are at the bottom and top of the plants. They are so short there isn't much difference between the two though, heh heh I would love to know the most likely culprit(s). I'm thinking maybe the safest move would be to water without feed next time (though Biobizz seem to recommend a constant dose of nutrients) dropping the pH to 6.2 or so and turn the light down maybe to 65%? Other Thoughts I've had Could it be a nutrient lockout somehow? Or should I just be boosting the nitrogen nutes, despite the burn I am seeing? In which case, should I try taking the feeding pH down to more like 6.2 in case there is a lockout occurring despite only being a touch high at pH6.8 ? Do I need to boost the cal-mag levels to the full dose recommended by the manufacturer? I felt I was only likely to be a little under, but I suppose it probably couldn't hurt to turn up the dose to full - even if there's already a fair baseline of calcium and magnesium in the water? Is it light burn, if so, why at the bottom of the plant as well? I'm going to get some shorter, wider pots for next go to shave a few inches off the starting height and allow them a touch more headroom. I wanted to try smart pots this time though and couldn't get them in a shallow and wide format. I'm not sure how much I could dim the SF1000 and still give the buds enough light. I mean it feels like I could drop it further, though there isn't uncomfortable feeling heat at bud level. Though the light is a lot closer than it would be in a typical grow-tent with plenty of headroom, it is serving a smaller area and is running at about 70% power. There is a breeze across the top of the plants, but with my hand under the LED for 60 seconds, it doesn't feel particularly warm or even hot. I'm left wondering If I drop the light much more, will it still provide enough light to flower well, if I haven't already completely scuppered my chances? Should I cut nutrient levels back down? I have included some photos of the grow, below. Ending with tonight's affected leaves. Any advice at all would be gratefully received. I have read up a bit, but I don't think reading gives you as clear idea as experience. In this case, I am working with so many compromises and unknowns that I don't honestly know which symptom is strongest and needing tackling most. I know a micro-grow will often have issues simply because of the downsizing, but I am definitely going wrong, I suspect in 2 or 3 places. So any advice will be gratefully received. Outdoor in soil was quite a bit less problematic. ------------------ This First Image is from a couple of weeks ago, before the problem advanced. This is from the last couple of days. Many fan leaves have fallen off and the other leaves are going yellow and burnt in the centre or at tips. Thanks in advance for any help you can offer folks! [Thanks too, to the admins for letting me in!] Midge.
  2. From the album Microgrow Sick Plants

    yellow leaves, burnt tips, nutrient burn, light burn, heat stresss, microgrow problems, pH problem?
  3. yellow leaves

    Hi can anyone help me im in early flower and im seeing a lot of yellow leaves on the bottom of the plant im watering with a ph between 6 and 7 and the medium is soil with fertiliser and perlite im also using dutch pro A and B nutrients
  4. Hi There, hope someone out there can help with a bit of advise. Setup: 1.2x1.2x2.0 (4x4) grow tent 4 xl autopot setup + airdomes (coco/perlite) Mars hydro tsw 2000 4 inch extraction fan with carbon filter Oscillating Tower fan Growing autoflower northern lights General hydroponics nutes at 1/4 strength + calmag Ive stoped the calmag now as after research ive found out my tap water is 200ppm so i dont need it, could this of done it? Ive also had my lights on 24/7 but now changed to 20/4, could this have done it? Seen a tiny bit of improvement. One plant is doing amazing but the other 3 are not. Any advise? https://ibb.co/qpN4hk3 https://ibb.co/fXkTVt9 https://ibb.co/3mR30jc https://ibb.co/ZScjrRJ
  5. A question about my plant: Some of the leaves around the middle of the plant are looking a tad yellow. The top leaves are curling downward. Just checking, is this OK or do I have a problem? Ta.
  6. Hi all new here and new to growing! This is my first plant and so far Ive been getting by with just reading what I can online. As you can see I'm doing something wrong and I'm stuck as I have no one who can take a look at it for me so just after a little help. Im using the full bio bizz range and using half the amount they say. It's in bio bizz light mix, would really appreciate any help Cheers P
  7. dying leaves

    From the album Sick plant

    yellowing leaves with brown patches, tips also curl inward
  8. These plans are 3 weeks old. they been in these 1 litre pots for 2 weeks(tomorrow) some of the plants have developed yellow leaves/yellowing I first thought it may be cold roots so I’ve raised the containers up on wood and have Tube heaters each side. the Room is 27c lights on 23c lights off just checked Root Temps just before lights came on and 19-21c the Four Green plants in one pot are PINK Kush then the other four which are the ones that worry me with yellow are 1 x pink Kush 1 x Gorilla Zkittles 2 x Pineapple Chunk all 8 are Biobizz light mix, I rotated the four with the other 4 incase it was a light issue light above them is 600w HPS Any ideas? the roots been up off cold floor now 5 days so not sure if it is that?
  9. So Mr Paranoid is back again pmsl ....last feed on the 18th I gave in and mixed some grow feed in (intense soil grow half strength 1.5ml / litre) to go with the intense foundation (4ml/litre) and calmag (1ml/litre). 24 hours later I had some yellowing on the tips of the new growth .. oops. However they seem to have recovered nicely ! No more feed for them just the calmag and foundation for now ! Yesterday evening the bottom leaves had started turning yellow eeek ! It was watering time (was 1/4 litre every 4 days) however they seemed drier than normal so upped it to 1/2 litre each of jug filtered water with nothing in (very hard water area however a jug filter takes the worst off ..not ideal but seems ok). Checking the temps they were high .. roots were 26.1 C, ambient 28-29.8 C, RH 40 % but they have always been high. I bypassed the variac and put extraction on full and intake on full (it's on a low setting on the unit by jumper so still negative pressure). I adjusted the heat mat to kick in at 22C instead of 24C. Temps today are 25.1 at the roots, 26.7 ambient., 37-39% RH. All three are showing a some yellowing though only on the bottom leaves. Lighting is at 352W LED (wall measurement) . Tent is 4x2x5 . There is a small axial fan blowing air from top to bottom via a diffuser. May change this to a normal fan . Not sure if this is natural or if something is going wrong - if so I would really like to sort it asap - been really pleased with this as a first grow (in the diaries section) . The three plants that are smaller (not in photo) are a week behind and other than one thats a bit of a mutant don't seem to have the issue . Thank's everyone .. look forward to hearing any thoughts before I try and take any remedial action (no idea so thought I had better hold off !) Thanks Compz
  10. My plant hasn't grown taller for about a month. Ive not given it nutes because the first time i did it burnt the ends of the leaves. So ive just been watering lightly as to not flood it. I checked it this morning and the leaves have yellowed. Its like it started to bud already as it smells in my grow area but its only a few inches tall. Any idea how to get it too grow taller and to counter the leaves?
  11. Hi Guys, My auto plant is 2 to 3 weeks into flowering. Naturally some of the lower fan leaves have turned yellow and fell off. However two thirds of the way up the plant, a few of the large fan leaves have started to turn yellow. Can I ask, is this the start of a nitrogen deficiency? If so, what suitable flowering nutrients can I give it at this stage? Many thanks
  12. Hi all can anyone help with identifying the problems with the leaves in this picture? It is only on the lower bigger leaves atm. Using Biobizz range with all mix. Been reading a lot about mag deficiency at week 3 of flower which is where I happen to be but this doesn't look the same as the pictures I've seen that show mag deficiency...
  13. So guys my first grow and I'm currently in wk6 day 6 of flower and the last couple of days I've noticed some yellowing leaves and I need some help understanding what could be the problem/s. I'll try to keep it short. I ran into a few minor issues along the way but have been browsing the forums often to gain as much knowledge as I can swallow. My setup is currently in my loft - 60x60x140 tent - 4inch intake fan and carbon filter exhaust. - 6"fan internal - Viparspectra 250hp led (recent addition before was using a cheap 600w that came with the tent) - Vitalink 100% coir - advanced nutrients sensi a&b bloom, sensi a&b grow coco formula, big bud, overdrive. I've been using half the recommend dosage throughout veg and flower and slowly been increasing. I used big bud for the first 4 weeks and now mid wk6 started using overdrive. - temps were a nightmare to start as they were planted in mid-late feb but now it goes between 21-30. - humidity between 30-40% depending on weather as my intake is connected to my soft - plants are 3 seeds which came from a batch I got from my guy. I'm guessing they could've came from a hermie, after reading the forums worried mine would too but they haven't and all female. - watering I use a soil moisture meter to try and better tell when the coir is dry, typically its every 3-4 days If any more info is needed or I missed something please ask. There is a few things I know I will change like next grow I will only do the 1 as the tent is quite small and they do look a bit cramped. I was also going to do an autoflower as they grow smaller. Some other info that might help determine the cause of the leaves. I recently changed my light from a cheap 600w led that could literally been on top of the plants and no burn to a viparspectra 250hp and I'm worried it may he light burn but the yellow leaves aren't limited to the center. I also started feeding overdrive so I thought maybe a toxicity but it's the top leaves that seem to be affected. I was thinking I could do a flush anyway which would mean bringing them down from the loft. Anyway pictures below, look forward to your wisdom
  14. casey jones

    Hi all, ive attached some photos of some yellow leaves I’m experiencing on some casey jones.. the photos aren’t great but hopefully you can see the issue. Hoping to fix the sick plant before she goes into flowering. All the other ladies are absolutely fine, under pretty much the exact same conditions. Any advice would be helpful.
  15. Hi all do any o e know why my leaves are turning yellow I used canna Vega in veg and canna Flores in Flowering mmm do I need add a booster appreciate any advice please
  16. im growing 6x ww x bb from seed and 4x candy kush from cuttings/clones using dutch pro light mix 600w led for veg 1200w led for flower ph perfect nutrients 3 part by advanced nutrients seeds are 10 days old cuttings 1 week from rooting ive not started feeding the plants yet as when i bought the soil he said there would be enough in there to last a little while before starting to feed can some one please tell me why the leaves are going like the pictures ive added, i thought this was because ive no fed them nothing yet, but the cuttings are alot bigger than the seedlings, but then noticed the seedlings doing the exact same as the cuttings. bit wired i thought and i cant find nothing like these on any forum, i want to get them right before its to late if any one can help me that would be great ! hi, im a new grower, so helpful this site is !
  17. My leaves are turning yellow and look like they are slowly dying. They are under 300w led 18/6. Any help would be much appreciated. Thanks!
  18. Hi All, I have two plants growing outside in pots.After good initial growth I tainted the soil by adding chicken manure pellets. Some of the leaves have now yellowed and have large brown spots. Is there anything I can do to save the plants? They are 3 months.Could they survive repotting in new soil?
  19. can anyone tellme what this is. its appeared on one or two leaves on each plant...is it something to worry about?
  20. can anyone tellme what this is. its appeared on one or two leaves on each plant...is it something to worry about?
  21. Hello fellow growers, This is my first grow and I am having problems with my plants. I planted them 2 and a half weeks ago and until now they seemed very healthy, but for the last couple of days, the leaves on one plant are turning yellow. I haven't used any fertilizer yet and I water them approximately every 5 days. Also, the plants seem a bit short, is this normal? Any advice would be very welcome. Here is a picture of the sick plant. Many thanks
  22. Hello I have three autoflowers which have just started there first set of true leaves, my problem is the bottom two are yellowing badly, is this a problem, if so how do I cure it please? Thank you Lucky Dan
  23. Hi chaps, I'm having a bit of aggro with my Green Crack Auto. Can anyone enlighten me as to what the issue is please? The second plant, although not GC is fine and has been under the exact same conditions. Cheers all, Col.