New grow.. northern lights need advice

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GhighJoe

Member
Okay hey guys. I decided to break and get some help from the professionals (thought I could do this on my own ha)
I just started my new grow (first time) and it's been going pretty well. I am growing northern lights in a 4x4 tent under a 400w hps. The temps are on average 71-82 Fahrenheit and the humidity is usually a constant 40-50% I have a humidifier and a oscillating fan as well as a carbon filter and exhaust fan. I had the plant on a 18/6 schedule but recently I switched over to 24 hours to try and speed It up (I have to harvest sooner then I thought) Today I noticed yellow spots on the leaves. I'm very concerned. Does any one know what it could be?? Please help
 

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chemphlegm

chemphlegm

Well-Known Member
stop messing with the lights.
only way to speed up harvest is to initiate flower with 12 hour light periods, provide every necessary resource the plant needs in a timely manner. you can flower this plant any time you wish, the longer you leave it under longer light the more you will yield in flower.
There is nothing better you can do right now than to read a grow bible, rosenthal, cervantes, groweedeasy etc.
 
roseypeach

roseypeach

Well-Known Member
What you are actually doing is increasing veg time on that schedule.Vegging the plant more is not going to speed up flowering. Flipping to 12/12 will.
FYI, those yellow spots mean the plant has a magnesium deficiency.

1) Flip to 12/12
2) add CalMag or other magnesium supplement
3) be patient!!! Rome wasn't built in a day, flowers take time. Pull up a chair and watch the grass grow ;)

P.S. If you're using soil and don't have any CalMag, epsom salt will work in a pinch for the deficiency. A tablespoon to a gallon of water will do the trick.
 
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GhighJoe

Member
Awesome I will give it a try. And yes I know I have tremendous patience and I've enjoyed watching this little girl grow. As she stands she is 2weeks old from planting the germinated seed. Also I know 12/12 makes it flower.. what I meant was I need to veg as fast as possible so I increased the lights to 24 because I read it shortens your veg time. Sorry if I confused y'all. But is it safe to just leave the light schedule on 24 for say.. another week then flip to 12? Thanks
 
mr buddy

mr buddy

Well-Known Member
GhighJoe said:
Awesome I will give it a try. And yes I know I have tremendous patience and I've enjoyed watching this little girl grow. As she stands she is 2weeks old from planting the germinated seed. Also I know 12/12 makes it flower.. what I meant was I need to veg as fast as possible so I increased the lights to 24 because I read it shortens your veg time. Sorry if I confused y'all. But is it safe to just leave the light schedule on 24 for say.. another week then flip to 12? Thanks
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I'd just stick with 18..6 . You can flip from 3 weeks old to 12 hrs light 12 dark ..I generally leave mine in veg 5wks under 18..6
 
G

GhighJoe

Member
mr buddy said:
I'd just stick with 18..6 . You can flip from 3 weeks old to 12 hrs light 12 dark ..I generally leave mine in veg 5wks under 18..6
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Cool sounds like a plan then. I wish I had more time I really wanted to try mainlining the plant but I can always try again when I have more time to experiment
 
roseypeach

roseypeach

Well-Known Member
GhighJoe said:
Awesome I will give it a try. And yes I know I have tremendous patience and I've enjoyed watching this little girl grow. As she stands she is 2weeks old from planting the germinated seed. Also I know 12/12 makes it flower.. what I meant was I need to veg as fast as possible so I increased the lights to 24 because I read it shortens your veg time. Sorry if I confused y'all. But is it safe to just leave the light schedule on 24 for say.. another week then flip to 12? Thanks
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You could but as the other poster said, 18/6 would be best. Anytime buddy :peace:
 
T

Tylleer

Member
GhighJoe said:
So.. here's an update. Iv been giving her fox farm nutrients every other feeding and I went ahead and pruned the yellow spotted leaves because they weren't getting any light but the rest look healthy.
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Its looking pretty good IMO but im a noob myself. From the 7/30 pics to now that looks awesome. As far as the yellowing of leafs goes, ive read that once its yellow its pretty much dead& no photosynthesis happens.. so just snip off all the yellow(even if its half a leaf). Anything green is still doing its job storing energy/helping growth. You dont want to leave the yellow on and let the whole leaf die because it could rot and possibly lead to sickness@the roots BUT! im no expert, just stuff ive read on other forums.. gl with the grow, NL is a dank strain! Im attempting my own first grow atm aswell ^_^

Edit:~ was for grammer
 
Bilbo Baggins

Bilbo Baggins

Well-Known Member
Hi-I've grown NL dozens of times, Usually Nirvana Feminised, The yellow spot problem , I still get it no matter what I try. Someone above suggests Magnesium deficiency, but I routinely add a sprinkle of Epsom salts, so I don't think that's the problem. I grow in Bio Bizz soil with Bio Bizz organic nutes, You don't mention what soil you are using, but are using fox farm nutes. I think our common problem is a little bit to do with over fert during the young vegging stage, as the yellow spot thing seems to disappear when the young plant is around half vegged. I think its a common problem associated with soil being a little '' hot '' for a while until the plant is large enough to use up the available nutes. I know its not a very scientific analysis but its the only sense I can make of what would be a common symptom. The good news is, NL is a tough tough strain and can handle it, so carry on. If your grow follow the usual path which I am familiar with you will end up with really good weed, but your plant will look an absolute mess by the time its done. Everything else in your grow seems really well balances , temps humidity etc all A OK. Good luck mate. Reason I mention soil is that from your pics I don't see any pderlite or other drainage enhancer there---hows your Drainage, are your plants getting some form of Oxygen into the root mass??
 
Lucky Luke

Lucky Luke

Well-Known Member
GhighJoe said:
So.. here's an update. Iv been giving her fox farm nutrients every other feeding and I went ahead and pruned the yellow spotted leaves because they weren't getting any light but the rest look healthy.
Click to expand...
has when you need to harvest by time, changed as well?
 
Lucky Luke

Lucky Luke

Well-Known Member
Bilbo Baggins said:
Hi-I've grown NL dozens of times, Usually Nirvana Feminised, The yellow spot problem , I still get it no matter what I try. Someone above suggests Magnesium deficiency, but I routinely add a sprinkle of Epsom salts, so I don't think that's the problem. I grow in Bio Bizz soil with Bio Bizz organic nutes, You don't mention what soil you are using, but are using fox farm nutes. I think our common problem is a little bit to do with over fert during the young vegging stage, as the yellow spot thing seems to disappear when the young plant is around half vegged. I think its a common problem associated with soil being a little '' hot '' for a while until the plant is large enough to use up the available nutes. I know its not a very scientific analysis but its the only sense I can make of what would be a common symptom. The good news is, NL is a tough tough strain and can handle it, so carry on. If your grow follow the usual path which I am familiar with you will end up with really good weed, but your plant will look an absolute mess by the time its done. Everything else in your grow seems really well balances , temps humidity etc all A OK. Good luck mate. Reason I mention soil is that from your pics I don't see any pderlite or other drainage enhancer there---hows your Drainage, are your plants getting some form of Oxygen into the root mass??
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Interesting.
Im growing some OO Seeds NL atm and havent had that issue. My soil is well cooked, in fact its from last year and has lots of drainage.
 
Bilbo Baggins

Bilbo Baggins

Well-Known Member
Yep, lucky luke--maybe its just a Bio Bizz problem on my side--maybe calcium, or perhaps a PH problem--your info suggests soil related---It never seems to come to anything serious in the end--maybe I should try new soil in the next grow--although it does seem to be a NL specific problem as I don't see this on any other strains in my set up
 
Lucky Luke

Lucky Luke

Well-Known Member
Bilbo Baggins said:
Yep, lucky luke--maybe its just a Bio Bizz problem on my side--maybe calcium, or perhaps a PH problem--your info suggests soil related---It never seems to come to anything serious in the end--maybe I should try new soil in the next grow--although it does seem to be a NL specific problem as I don't see this on any other strains in my set up
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First time Ive grown it. Whats the stretch like? I'm seeing about double from the seed bank sites.
 
Bilbo Baggins

Bilbo Baggins

Well-Known Member
Lucky Luke--I find it you give NL a decent veg time then the stretch isn't bad, but if you push a half grown vegged plant into flowering a little earlier then the stretch can be 18inches maybe even two foot--Ive had them 4 foot tall and growing into the light suppose the average stretch could be around 12 inches or so
 
Lucky Luke

Lucky Luke

Well-Known Member
Bilbo Baggins said:
Lucky Luke--I find it you give NL a decent veg time then the stretch isn't bad, but if you push a half grown vegged plant into flowering a little earlier then the stretch can be 18inches maybe even two foot--Ive had them 4 foot tall and growing into the light suppose the average stretch could be around 12 inches or so
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That seems to marry up with the doubling by the sounds of it.
Im in a scrog and its had a decent veg. Trouble is so has the plant next to it that will it seems, triple in size (she is a Strawberry Amnesia). Im just a touch stoned, tipsy and a bit worried its gunna all get out of hand if i dont switch at the right time.
 
G

GhighJoe

Member
Bilbo Baggins said:
Hi-I've grown NL dozens of times, Usually Nirvana Feminised, The yellow spot problem , I still get it no matter what I try. Someone above suggests Magnesium deficiency, but I routinely add a sprinkle of Epsom salts, so I don't think that's the problem. I grow in Bio Bizz soil with Bio Bizz organic nutes, You don't mention what soil you are using, but are using fox farm nutes. I think our common problem is a little bit to do with over fert during the young vegging stage, as the yellow spot thing seems to disappear when the young plant is around half vegged. I think its a common problem associated with soil being a little '' hot '' for a while until the plant is large enough to use up the available nutes. I know its not a very scientific analysis but its the only sense I can make of what would be a common symptom. The good news is, NL is a tough tough strain and can handle it, so carry on. If your grow follow the usual path which I am familiar with you will end up with really good weed, but your plant will look an absolute mess by the time its done. Everything else in your grow seems really well balances , temps humidity etc all A OK. Good luck mate. Reason I mention soil is that from your pics I don't see any pderlite or other drainage enhancer there---hows your Drainage, are your plants getting some form of Oxygen into the root mass??
Click to expand...
So I'm pretty new to this all so my setup is pretty basic. I have cloth 3gal pots that are supposed to be good for getting air to the roots. But other then that nothing else. I'm using miracle grow soil. I didn't really put too much effort into the medium. I figured the plant would be fine since it is a weed after all. Basically if I can get a quarter or some dank I will be happy. It's a fun experiment. Next grow I will put more effort into it all and try and maximize my yield. The cloth pots drain pretty well (out the sides and bottom)
 
Bilbo Baggins

Bilbo Baggins

Well-Known Member
Well, the cloth pots will certainly help, I think miracle grow soil is sometimes considered a bit 'Hot ' by growers over in the US ???--we don't really get miracle grow in grow shops here in the UK. but plenty still use it, anyway I don't believe the yellow spot thing is a fatal disease or anything, so don't get too hung up on it. A wee thing I used to do when I suspected the roots wern't getting enough air was to get something long and narrow like a knitting needle and insert it down among the roots half a dozen timescreating little tunnels of air in the soil, which the plants seemed to respond favourably
 
coreywebster

coreywebster

Well-Known Member
Water the cloth pots very slowly, give them all a small amount each and go back around each one 3-4 times. They are great but they can be very misleading, you want to know your getting true run off and the whole medium is been saturated. Water too quick and it comes out of the sides and travels down the fabric which can make you think you have a fully watered plant when in fact you may not have. That will cause issues.
 
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