leaves drying from bottom up (pics)

Hey ladies and gents, ive been browsing these and many more forums/articles for some time now. im a newbie at growing, and not an expert with plants so please bear with me Ive germinated and planted my first seed, the plant is now 25 days old. however, the leaves start drying up from the bottom upwards. ive tryed finding information on this and some say it might be because the plant is lacking nutrients, or it has more nutrients than what it needs, ph levels not right, chlorine in water, the list goes on. im growing it outdoors, the country im in has a very humid and hot weather reaching temps of roughly 35C (sometimes more, sometimes less), the plant gets enough sun where it is, roughly 4 hours of direct sunlight? i worry to leave it more because its so hot some times. I water it every 2 days (in hot days i water it daily). Its a northern lights Auto seed, any more information required please ask. This is the soil and nutrients i use and a few pics of the plant, I use 3 pinches of Phostrogen for every litre, as it says on the box. Any advice is very welcome


Soil & Nutrients:

BlazeSensi said:

ive tryed finding information on this and some say it might be because the plant is lacking nutrients, or it has more nutrients than what it needs, ph levels not right, chlorine in water, the list goes on.

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I know it's off-site, but http://www.420magazine.com/forums/problems-pests-disease-control/81275-cannabis-plant-pest-problem-solver-pictorial.html

Nobody can solve your problem for you by just one look. Have a good read and average out all the symptoms you'll find what it is. Looks like nute burn and heat stress.

nice baby. I have some autos too : ) A couple of days ago I was advised to plant the seed in the pot where It's suppose to flower. They said autos do not like to be transplanted. Maybe you want to keep that in mind!

I have almost the same yellowing leaves, but they don't look "burnt" like yours, they are just yellow. So my guess is the same as the person above - nutrient burn. I don't think it's lacking nutrients because your baby does not seem to grow slower than usual, compared to my babies who are just 4 days younger than yours... But I got heat stress too, time to time.. good luck : ) !

PH is important regardless unless you're using pH balanced soil such as PROMIX. Also, drainage of the soil is equally important as you can easily accomplish this by adding 10% perlite to the mix. Over watering and over fertilizing is a very common problem when starting out so I would be very careful with this. Always start feeding nutrients at a very low dose...I'd say around 1/4 the recommended dose. I like waiting until the plant says "give me some water" ...the plant will droop a little when it's time. Make sure the soil dries ALMOST completely before watering and get a feel for the weight of the pot dried and after watering so you use that as a guide in addition to sticking your finger down into the soil at the edge of the pot. The roots need to breath as well so if they are always wet...they will literally drown. An easy way to take care of this is to buy potting mix with perlite already in it as the perlite alone is pretty pricey.

Looks like good old fashioned nute burn too me.

Thanks for the helpfull advice. ill have a look at that site and try to pin point the problem exactly, i just dont wanna try solving something i think it is and causing more damage, i dont trust myself as much haha

nice baby. I have some autos too : ) A couple of days ago I was advised to plant the seed in the pot where It's suppose to flower. They said autos do not like to be transplanted. Maybe you want to keep that in mind!

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i didnt know that about autos, fussy plants goodluck with your plant as well!
ilovebush i will check into the Ph level of the soil, i know how important that can be. if im going to transplant it into a bigger pot ill get some pearlite aswell to mix up with the soil, although im pretty sure any excess water does drain from the current pot, i put tiny stones at the bottom of the pot before putting the soil. Yea i like seeing the soil dry and then watering the plant, the roots tend to stretch out into the soil to look for water as the soil dries up.

Looks like good old fashioned nute burn too me.

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i will change things up and see how it goes.
Thanks again!