leaves are dying on my babies

hey guys, this is my first grow and i have 2 small plants, the bigger one is about a week and a half old and the other about a week... i transplanted them and moved them to there new grow room, the next day whe i checked them half the leaves on the small one had turned brown, and now one of the leaves on the bigger one have started to brown any clues? i thought that maybe i had burnt them with the lights so i moved them further away but the smaller one seem to have otten worse...

you probobly dont have the proper ventilation, you should have a fan on them all the time.
1. promotes stronger stem growth
2. keeps ur plants from goin crispy on you
3. there is no 3

i have heaps of ventalation, i have 100mm computer fan which shifts the air every couple of mins, and my temps never get higher then 80

i'd pH your water before you use it just so u know it should be around 7.0. what soil are you using? no nutes till atleast week 3

nah no nutes yet, im using a seedling mix i bought from a local store... if i use purified water is that cool?

it should be since it would be closer to 7.0 then the usual tap water.

anyone else got any sugestions on what could be wrong?

Marijuana likes a ph of between 6.3 & 6.8, ph your water ...just to be safe.
What? exactly is in the seedling mix, some put ferts in there, so double check.
You could also ph your medium, just make a slury with distilled water... 1/4 cup medium + 1/4 cup distilled water, mix well , let sit for 1/2 an hr, heavy matter will sink and you can ph what`s on top... should give you a pretty good reading of what soil ph is.
Hope this will help a bit.
canadiancowboy

zechbro said:

anyone else got any sugestions on what could be wrong?

Click to expand...

You're over-watering your seedling.

But I'm sure there are more knowledgeable people here who'll tell you it's ph or a deficiency of some kind although they'll struggle to name it for you.

The way to check if you are over watering is to use a moisture meter. That is the only way to be sure. Especially on seedlings.

I use and recommend the single probe Rapidtest moisture meter. It is available from most of the major garden centers for under $20. This meter reads consistently without using batteries. It is invaluable for determining watering schedules, which vary tremendously from plant to plant, overwatered conditions, and uneven moisture distribution within the container. Rapidtest also sells a shorter, two probe model which should be avoided. Make this investment, monitor conditions regularly, and reap the rewards at harvest.

Growers that allow their medium to dry out to the point at which the leaves "droop" are reducing their final yields and quality. The medium contains a certain amount of salts that dramatically increase in concentration as the water dissipates. The roots can be repeatedly stressed going through this technique called "wet/dry cycle". The plant is being deprived of moisture that would be available to fuel additional growth and suffers.

The moisture meter's probe should be inserted to various depths to accurately assess conditions. The Rapidtest has a 1-4 scale on the meter, but what is imporatant is relative moisture. The lower potion of the medium in the container should not be so consistently and constantly moist as to "bury the needle" at the top of the scale. The middle depths of the container should be kept in the upper half section of the meter's range and the top should be allowed to dry out to the lower half of the range before rewatering.

This is far more accurate to the lifting and guessing game played by many. The weight of the container does not indicate where the moisture is inside. A grower would never really know if things at the bottom were oversaturated without a probe to tell them. If the bottom is soaked and never dries out, the container feels "heavy" even though other areas may be quite dry. Many grower use large, tight grids of 3-5 gallon containers which can amount to 40-100+ containers. How could they use the lift and guess method, if they can hardly reach some of my plants just to water and prune them. It would be impossible and bad for their backs to use anything except a moisture meter. In other situations the plants are attached to fixed supports, such as SCROG or simply tied up prohibiting movement. There is no more accurate or versatile way to determine your watering schedule.

How about we actually show that FAQ entry in it's entirety, so people can decide for themselves which system they want to use. I've included the section at the end of that FAQ entry that was removed from the original cut and paste from the GrowFAQ. Also, just so people can check the entry themselves, I've included the url to it.

Personally I think it's not only wrong, but deceptive and deceitful to remove a section of copy from an FAQ entry soley because you don't want anyone to read sections of it that don't happen to correspond with what you happen to beleive.

Moisture Meters are basically a waste of time and a waste of money. They're inaccurate, go out of accuracy very quickly and if that isn't enough you risk damaging your roots by constantly poking it into the soil right down into the bottom of the container - this damages roots.

I do not recommend anyone use moisture meters. Learn and understand the lift the pot method and you'll never wonder when to water your plant ever again.

Every single experienced grower I know of uses this method and no-one uses moisture meters.

At least now, people have both sides of the coin and can make their own minds up as to which method to use and not just have a one sided FAQ cut and paste to go by.

People don't use cheap 10 buck ph meters to check their ph with, they buy expensive, accurate and reliable ph meters that can be calibrated back to accuracy. So why should you trust the results from a cheapo 10 buck moisture meter? I don't.



Added by ~shabang~:

I am one of those that plays the "lifting and guessing game" and I will always recommend that you use your senses to judge and understand your plants rather than trusting in a $8 Wal-mart toy.

If a grower has 40-100+ large containers then they are likely experienced and likely growing mostly the same crop. When you know your plant and your system you don't use a moisture meter. No serious grower that I've met personally does.

Moisture meters are fine for beginners IF you use multiple sample points in each pot. It's too easy to hit a pocket of perlite or just rub the sensor the wrong way. I'd rather judge by visual and tactile response rather than entrusting a wavering needle on an inaccurate meter. You know that when you lift up your container, is it wet? or is it dry?

Authors: MisterIto & ~shabang~

Source:https://www.rollitup.org/view.php?pg=faq&cmd=article&id=88

thanks for the help guys i think im going to go with the moisture meter at this stage, seems like a sure and easy bet for me for my first grow
cheers

it looks really wet. i let mine wilt before i water. it's a long story.....