HELP! leaf problem

[YourRegularNoob]

hi everyone. the northern lights are 22 days old now. topped it on day 17, and they are recovering and filling up nicely. but I ran in to some (hopefully) small problems. when I got home from work today I was a little worried because the weather is getting pretty hot right now. And I don't grow in my house, but in my back yard in a small shack. so the temperature can get pretty high in there. so when i got home, and checked my plants, temperature in the tent was 30 C, (86 F). I tend to get stressed out really quick so you can imagine my reaction . but okay then i turned around my biggest plant, and i see a few yellow ish spots on 2 of the lower leaves, just one node above the bottom leaves (which are getting a little light-colored aswell. ) the spots aren't that big but my plants never showed any kind of spots or coloring problems so It was really stressing to see this today. hope someone can help me out and maybe tell me what i should do. btw I hardly use any nutrients so I don't think that's where the problem is.

 

[tyler_ hobbyist]

In my personal opion it's nitrogen deficincy and that's caused by not useing nutreints! Fox farm nutes work very well there organic based which is really nice also bluesky nutrients are fully organic if u wanna go that route but I personaly would start useing nutrients or ur gunna run into more problems. Also add. Exhale co2 bags or some form of co2 to ur room the exhale bags work awesome but take 2-3weks to start working but then it gives u constiant 500ppm of Coe per 4x4 space optium levels of co2 are 1200-1500 ppm normal air contains 300-400ppm. With higher levels of co2 u wount have to worry about light stress of heat stress very much 85 degrees is just fine with added co2 at theser levels u could go as high as 95degrees with that co2 level and be just fine mine sit around 90degrees with 1200ish ppm of co2 and there just fine at 10inchs away from 2 1000watt hps lights. Adding this level of co2 will solve ur problems! When u getunder half way into flower ur gunna have to install a air conditioner because the taste and smell gets burnt away after 75degrees so optium temp in flower is 60-75degrees and exhaust fan throw ur roof will help but a better idea is an AC that's the way to go it's more constant temps and doesn't flucuate so much

 

[tyler_ hobbyist]

So long story short add co2 add nutes and add an AC

 

[Guest]

Same thing happened to my Northen Lights from Nirvana what I found is that my ph was off make sure your ph is good according to your soil or hydro whatever you are growing in..

 

[YourRegularNoob]

Okay thanks man! I will first try and give them some nutes and try to keep temperature down, if it doesn't work i will try and add co2

 

[tyler_ hobbyist]

Perfect 2 cheap ways to add co2 is the exhale co2 bag or water sugar and yeast in a bottle with a hose to ur plant

 

[YourRegularNoob]

No Title

I added nutes, (hy-pro terra 2,5 ml) (aptus regulator, about ,75 ml) you can check the ph and ec down below. so i also checked the runoff water on my plants. the biggest one, which is also the one with the leaf problems, has a ph of 5,2.. damn... (i don't really understand because i only gave it nutes twice) other plant has a nice ph of 6,1. so please help me fix this because i have no clue how to fix this . I read somewhere that when the temperature rises, and the ph drops, your plant is in danger of getting raped by all kinds of fungus and also root rot

 

[YourRegularNoob]

you are right, my ph is way too low, a painful 5,2

 

[Guest]

Water your plant with high ph that should make your run off and ph at root zone be higher that how I fixed my low ph problem hope that helps..

 

[YourRegularNoob]

No Title

guys I cut off 3 branches of both my plant (just the lower leaves.) as i was told the best time to do this is in veg or the first week of flowering. (flipped it to 12/12 two days ago) and I just wanted to show it to you. stuff just looking sad on plant 1. but it is growing vigorously so I am confused.. the smaller plant, number 2, is looking healthy. accept for the lower two leaves i cut off. just hope I make it to harvest day.

if you compare the two plants you can really see the difference. just kind of weird because when i look on top of the plants number one looks much better and bigger... I managed to get the ph up too so that won't be the problem

 

[Jeg]

Can we see a picture of the whole plant?

 

[9fingerleafs]

i think your plants are perfeclty happy and healthy, as you can see, old leaves die, not all of them but some, the ones that get less light or more wind or something, and its perfectly normal, like jeg asked, only seeing the whole plant can one know, don't try to fix little things by aggressively changing what you do, keep it consistent and observe and learn, wonderful process flowering, focus on whats the plants is going to need next

 

[TheDude420]

Since you have swapped to 12/12, I wouldn't worry about nitrogen. Plants need less N in flowering. However they do need more P and K. They look good. Looks to me like maybe overwatering. Let the top inch or so of soil dry out before watering again. Keep your watering schedule consistent and maintain PH at 6.3. Patience is a must.

 

[YourRegularNoob]

No Title

thanks guys I really appreciate the help! the pictures below where made yesterday just after watering so they might look a little droopy. You can probably see I did some LSTing not too perfect but i thought i'd give it a try