newbie could use help first grow and i have bo idea whats wrong?

[llopes12]

Hey guys my first grow going here. Its been going for about 3weeks now and started off good until a few days ago i noticed some yellowing and brown spots on some of the leaves and certain leaves are drying out. I only gave here nutes once so far and the ph has been stable. I water about every 3 days once the soil dries out. Can anyone give me some advice on whats wrong i would really appreciate it. Not all the leaves are yellowing just a few.

Here are some pics.

 

[imchucky666]

No need to double post man, just give us a few and you'll get your answers

 

[elgatonegro420]

give me some specs on what u got goin. temp lights and distance. i need a feel for ur grow.

 

[mrweedman321]

Did you keep your lights to close to your plant? Using good soul? Feeding them right?

 

[pokesalotasmot]

Without knowing more details of your grow, I'm going to guess high temps and/or Nitrogen deficiency.

 

[DeeTee]

Looks to me like N deficiency too.

 

[Marktell2012]

http://www.growweedeasy.com/marijuana-symptoms-pictures

 

[llopes12]

Thnks for the quick replies and sorry for the double post lol but temps is steady around 78 degrees lights on and im using t5s right now with a couple hanging cfls. Using fox farm ocean forest with perlite. I fed her only once so far on my last watering. She is about 3 weeks old i noticed yellowing before the feeding.

 

[imchucky666]

Did you reply on the other thread? I can't find it, but I know I asked what you had/ meant by 'stable' PH, and also I think I asked what you had fed.
Any chance that burn is from splashing water with nutes on the leaves?
Did it happen a few days after the one time you fed?
You might have been on the right track with the feeding thought, but burned the leaf when you poured, that's why I ask.

 

[llopes12]

Ph of the water is 6.8 and soil is around 6.2. i feed with fox farm nutes and i noticed a bit of yellowing before the first feeding. Yes its possible i may have splashed water dont remember though ill keep that in mind.

 

[mrweedman321]

78 degrees is way to high with lights. Do you have an exhaust going from the room out? For the heat

 

[grorite]

78 degrees is way to high with lights. Do you have an exhaust going from the room out? For the heat

78 is perfectly fine only 3 degrees warmer than perfect try to keep temps between 75 and 80 even a lil higher and you will be fine

 

[mrweedman321]

From my understanding and growers I've talked to they said to keep the room at around 73 the highest if you want a healthy plant.

 

[imchucky666]

70 to 80 is fine, my plants did well in the outdoor, when temps went ovr 80 into the low 90's, because I always had a light breeze with humid air.

 

[grorite]

70 to 80 is fine, my plants did well in the outdoor, when temps went ovr 80 into the low 90's, because I always had a light breeze with humid air.

plants can grow in hotter temps outside because they get more co2

 

[imchucky666]

But I'm going by the thermometer that was at soil level, and it never went past 80, so I just figured the breeze was keeping it cooler.
Good to know on the CO2 though, thanks.

 

[grorite]

breeze prob was helping some but think of it as indoor if your adding co2 you can run at a higher temp outdoors there is tons of co2 everywhere