Is this light burn or nutrient deficiencies?

Hi all, need some help identifying what this problem is that I think is in its early stages on my candy Kush photo plant. I did recently get a new led light to fit my bigger grow tent so I'm thinking it's light stress but also it looks like maybe something is chomping on the leaves. I transplanted her literally just then into her 5 gallon pot coz she grew out of her 1 gallon, I'm about to water her in properly so that's why the Coco looks dry around the edges. She is in Ugro Coco and perlite. My old light was mars hydro 100 watt & the new light is spider farmer 200 watt with Evo diodes which can dim. I put it 60cm above canopy at 50% to get her used to the new power but have turned it down to 40% incase it's light stress. There is yellowing between the leaf veins, one tip looks a little burnt, purple stems & some of the leaves look chewed. I have started giving more calmag because I was thinking possibly a magnesium issue. I'm following the bio diesel nutrient chart. I think she's just out of seedling stage but is hard to tell because I had issues with growth as a seedling. PPM:550 pH:6.0. Keeping humidity at around 55-60% & temperature during the day gets up to 28 with night time at 20 degrees celsius. If anyone knows what this is I would really appreciate your advice. Thanks very much

Yellowing starts from the bottom leaf area and moves slowly up... Nitrogen. I'd feed this lady a bit more veg formula. Photos consume more food than autos. I'm in end of week three dwc and will bump her up to 800 ppm this week. They showed no signs of nute burn at 700 so up she goes.
I'd have some calmag available as well. I do add it to my grow but also use it as a foliar spray.

greenmobster440 said:

Yellowing starts from the bottom leaf area and moves slowly up... Nitrogen. I'd feed this lady a bit more veg formula. Photos consume more food than autos. I'm in end of week three dwc and will bump her up to 800 ppm this week. They showed no signs of nute burn at 700 so up she goes.
I'd have some calmag available as well. I do add it to my grow but also use it as a foliar spray.

Click to expand...

Yeah I did autos earlier this year, this is my first photo in like 10 years. It did start from the bottom but then the weird little holes in the leaves made me question whether I was right about it being nitrogen or magnesium deficiency. I just fed her 600ppm, how quickly does nute burn show up or in other words how long do you wait to up the nutes? I've been upping the nutes slowly but wondering how fast I could bump it up to fix the issue. I do foliar feed with professors cloning accelerator coz I've been lazy and haven't made up my own foliar feed like I probably should have. I've been using marine calmag with the A&B plus a whole host of other stuff but thinking I just haven't been using enough of it. Can light stress cause little holes in the leaves? Thanks heaps for your reply, much appreciated

BibbyMcBuds said:

Yeah I did autos earlier this year, this is my first photo in like 10 years. It did start from the bottom but then the weird little holes in the leaves made me question whether I was right about it being nitrogen or magnesium deficiency. I just fed her 600ppm, how quickly does nute burn show up or in other words how long do you wait to up the nutes? I've been upping the nutes slowly but wondering how fast I could bump it up to fix the issue. I do foliar feed with professors cloning accelerator coz I've been lazy and haven't made up my own foliar feed like I probably should have. I've been using marine calmag with the A&B plus a whole host of other stuff but thinking I just haven't been using enough of it. Can light stress cause little holes in the leaves? Thanks heaps for your reply, much appreciated

Click to expand...

Your on the right track. In hydro they show pretty fast with burnt tips. In soils and other mediums it's a bit slower. Photos do eat more then autos. I'm trying to wrap my head around autos needs and not overfeed the picky little things..lol. Start with the manufacturer feed chart and bump up. Don't be afraid. A few burnt tips don't hurt. Just kinda let's ya know she's maxed out.

greenmobster440 said:

Your on the right track. In hydro they show pretty fast with burnt tips. In soils and other mediums it's a bit slower. Photos do eat more then autos. I'm trying to wrap my head around autos needs and not overfeed the picky little things..lol. Start with the manufacturer feed chart and bump up. Don't be afraid. A few burnt tips don't hurt. Just kinda let's ya know she's maxed out.

Click to expand...

Autos are very picky lol, I've got my outdoor set up finished so I'm going to germinate two autos tonight so I'll be mixing up two different nutrients everyday but will be worth it to see if I can get them to grow in the green house with the light. I pretty much stuck to half of what was recommended on the label the whole grow with the autos, it worked really well luckily. Will stick to the nutrients the chart says but just bump it up like you say until she shows signs it's too much. I think I've been under feeding coz I'm used to the autos needs. Glad it shows up fast in Coco, that makes it easier so I know faster if it's too much. Also photos have longer to recover too so that's good. Do you know how long after transplanting I can start the low stress training up again? Don't want to start it too soon to shock her but also don't want to wait too long either. Thanks so much for your help

BibbyMcBuds said:

Autos are very picky lol, I've got my outdoor set up finished so I'm going to germinate two autos tonight so I'll be mixing up two different nutrients everyday but will be worth it to see if I can get them to grow in the green house with the light. I pretty much stuck to half of what was recommended on the label the whole grow with the autos, it worked really well luckily. Will stick to the nutrients the chart says but just bump it up like you say until she shows signs it's too much. I think I've been under feeding coz I'm used to the autos needs. Glad it shows up fast in Coco, that makes it easier so I know faster if it's too much. Also photos have longer to recover too so that's good. Do you know how long after transplanting I can start the low stress training up again? Don't want to start it too soon to shock her but also don't want to wait too long either. Thanks so much for your help

Click to expand...

I'm doing the opposite. I'm trying to wrap my head around autos needs..lol.
I start training at about 4 nodes. As soon as the stems hardens up. Most top the plant. I simply get it sideways and let nature provide the branching without removing a bud site. I wouldn't worry much about stress. They are pretty tough.
I hope your ladies respond well. Coco is a great medium and much faster than soils. I lean towards peat when not in hydro. Just a personal preference.

I'll try to help ya anyway I can. There's a lot I don't know yet but basics never really change. I usually learn from helping and it also keeps me more aware of what I'm trying to accomplish....overgrow Ohio..

With the bigger light comes a bigger nutrient requirement. Plant needs a good dose of veg nutrient.

It looks like spidermites possibly. The photo resolution is very good but I can't quite positive id them. There are marks on the leaves and I am pretty sure I see mites on the leaves.

greenmobster440 said:

I'm doing the opposite. I'm trying to wrap my head around autos needs..lol.
I start training at about 4 nodes. As soon as the stems hardens up. Most top the plant. I simply get it sideways and let nature provide the branching without removing a bud site. I wouldn't worry much about stress. They are pretty tough.
I hope your ladies respond well. Coco is a great medium and much faster than soils. I lean towards peat when not in hydro. Just a personal preference.

I'll try to help ya anyway I can. There's a lot I don't know yet but basics never really change. I usually learn from helping and it also keeps me more aware of what I'm trying to accomplish....overgrow Ohio..

Click to expand...

Autos can be really difficult, I really struggled at first. The nutrients are really hard to get right because all of the charts are for photos. I'm doing the same, not gonna top her just going to get her growing sideways, not enough room in my tent for a full blown tree unfortunately so have to learn LST. Her stem is getting pretty hardened now, I'll start training her today then. Do you think I should bump the light back up to 50% then wait a few before going to 60%? It's supposed to be at 70% for veg, that's what the company says anyway. If I'm feeding more then hopefully the problem will resolve. No burnt tips or anything after feeding at 600 so I'll go to 650 today. Thanks

Modern Selections said:

With the bigger light comes a bigger nutrient requirement. Plant needs a good dose of veg nutrient.

It looks like spidermites possibly. The photo resolution is very good but I can't quite positive id them. There are marks on the leaves and I am pretty sure I see mites on the leaves.

Click to expand...

I thought spidermites too but haven't seen any real sign of them, although sometimes you don't then all of a sudden they are everywhere. I do have a bad bug problem outside at the moment with the weather so wouldn't surprise me at all. Thinking of doing a Neem oil spray just incase. I didn't know that the amount of light changed the amount of nutes needed, thanks for that.

Sounds all good. I'd bump up the lamp as well. Just watch them and if they respond well..awesome. I don't see any reason why they wouldn't. Bugs can be an issue. As long as you don't see any signs of critters those spots are prob from a nutrient def. They can sometimes make ya think it's bugs. My outdoor grow I had just about every big you can get. What a shit show...but I made it..lol

One of my autos popped out a twin. Never had that happen before. I executed the smaller twin. Survival of the fittest...lol. They are doing okay so far but I'm still not real comfortable with them yet. Takes time so I'll be patient.

greenmobster440 said:

Sounds all good. I'd bump up the lamp as well. Just watch them and if they respond well..awesome. I don't see any reason why they wouldn't. Bugs can be an issue. As long as you don't see any signs of critters those spots are prob from a nutrient def. They can sometimes make ya think it's bugs. My outdoor grow I had just about every big you can get. What a shit show...but I made it..lol

One of my autos popped out a twin. Never had that happen before. I executed the smaller twin. Survival of the fittest...lol. They are doing okay so far but I'm still not real comfortable with them yet. Takes time so I'll be patient.

Click to expand...

I've bumped up the light like you said back to 60%. How long would you recommend I wait to bump it to 75% or should I just give it a go as soon as she wakes up? I did 850 ppm today so hopefully that goes well. She seems to be picking up since I upped the nutes but the new growth at the bottom of the stem have died off, could be because of the transplant? Bugs suck. My yard is absolutely crawling with fungus gnats in the grass right now, I got mosquito bits yesterday so tomorrow I'm going to soak the bits in my watering can for half hour then literally soak every square inch of the grass in the stuff. You might already know but apparently mosquito bits are really good for getting rid of fungus gnats & you can use it in your medium too. I know that the Neem oil works pretty good & it doesn't seem to affect the plant in any bad way. I haven't seen any signs of bug infestation apart from the weird chew marks & I think one bug was flying around in there a day ago but it also could have been just a bit of Coco or ash from joints being blown by the fans. My last grow was two autos. I was convinced I had spider mites because I had nutrient deficiencies plus I had these weird white spots on heaps of the leaves that looked like eggs, I treated the plant with eco oil, Neem oil, eco fungicide & hydrogen peroxide plus cleaning everything with vinegar & spraying the outside with anti bacterial trying to get rid of these weird white egg looking things for weeks. Spent so much money on the stuff to treat the plants while they were in flower to not ruin the buds. The eggs did start to go away so I thought sweet as the problems fixed. Turns out there was no bug problem, there was no bugs nor eggs, I had been focusing on the wrong thing the whole time. After I had harvested them I was cleaning out the tent when I saw what was making all this work for me, it was my damn clip on oscillating fan rubbing on its white pole clip as it turned from side to side making all these tiny white bits of plastic come off lol. I felt like an idiot so I didn't tell anyone I had been asking on here about these stupid white eggs lol. Pretty funny. To be fair they did look very egg like

That's a funny story..lol. The shit we miss sometimes is crazy.

Let's hope a little food will help things along. 850 is a pretty good jump. Keep an eye open for any cupping or tip burn. Not real sure how far into veg you are. They can handle a lot of light in veg n flower.
I am still learning my led lamps. So maybe we can learn together..lol. I got a little to aggressive with mine at first and have since backed them off. I'm seeing better growth now. Plus I want them autos to stretch a little anyway. Ill pound them with light in a few weeks.

greenmobster440 said:

That's a funny story..lol. The shit we miss sometimes is crazy.

Let's hope a little food will help things along. 850 is a pretty good jump. Keep an eye open for any cupping or tip burn. Not real sure how far into veg you are. They can handle a lot of light in veg n flower.
I am still learning my led lamps. So maybe we can learn together..lol. I got a little to aggressive with mine at first and have since backed them off. I'm seeing better growth now. Plus I want them autos to stretch a little anyway. Ill pound them with light in a few weeks.

Click to expand...

Sorry for late reply I got a bad toothache after having a bloody Milky way, some pain & $400 later my tooth should be fixed. Most expensive Milky way ever lol. Haven't had any tip burn or cupping so far which is good, I sort of expected to see it but hasn't happened yet. It's so hard to tell how far into veg she is because she had a really long seedling stage, pretty sure she had some genetic issue or something. I'm doing nutrients for week 4 now so ppm 900, seems to be doing well. How far into your auto grow are you & how much was too much? I've actually just germinated two autos for my outdoor greenhouse, one of the seedlings has a j root but seems to have fixed itself. Not sure when to actually put them outside but I guess will have to be when they can't fit in my indoor tent. I've got a light for the greenhouse so the length of days shouldn't really matter, it's the start of summer here so it should go well hopefully.