Leaves problem

[matejTiger]

So hey everyone, I recently started my very first grow, just to kinda try it and to see if I have a grower in me. We are nearly 2 weeks old and until now everything went smooth, but yesterday I spotted something odd about my plants' leaves. Might be a sign of over watering maybe? That's the only diagnose that fits from those listed at the site. But I wouldn't say I watered it too much. 'Pot' has drainage at the bottom, but I might add some small holes around the middle of the cup, where the roots are +- located. Thanks for any advice.

EDIT: Ok, so I came to a conclusion it is caused by low humidity. Can someone confirm it, plese? Any tips on how to raise it to needed levels?

[oldjarhead100]

two thing I see from the picture ! your light is to far away your baby is stretching .What kind of light do you use. and 2 . what kind of soil is that? does it have any perlite or vermiculite in it(I dont see any). when I water my seedling at that age I only give them about 1/2 pint at a time for the first couple of weeks then go to a pint .It is real easy to over water in plastic cups there is no air and the water just sits their because the plant can't drink it all before it starts to affect it.you have to let them dry out a little after each watering . do you do that . get yourself a cheep water meter that you can stick into the root zone and only water when its about half way dry

[Canuck147]

Another thing I see are the clear plastic cups you are using. The roots don't like the light.

[Gdub]

I like using clear cups for starters. You can really keep track of how the roots are doing and know when to transplant. Just get a cup wrap from Starbucks to block light and you can take it off for a good look at the roots. You are drilling some holes in the bottom aren't you for drainage? Transplant when you see the roots reaching the bottom and sides of the cup. Twirl the cup a little in your hands, pressing in lightly till the soil breaks free from the sides. Then place the stem between your fingers and turn the cup upside down over the new container so most of the soil that drops free is caught by the new container. It will pop out in your hand. Place in new pot with soil to cover the bottom of the stem. Don't pack tight, let the water do that for you. Remember the bigger the pot the bigger the plant can get. Cannabis roots go DEEP so choose the tallest container you can manage at at least 5 gallon. I use 15 gallon and some larger. I'll post pics later.

[matejTiger]

two thing I see from the picture ! your light is to far away your baby is stretching .What kind of light do you use. and 2 . what kind of soil is that? does it have any perlite or vermiculite in it(I dont see any). when I water my seedling at that age I only give them about 1/2 pint at a time for the first couple of weeks then go to a pint .It is real easy to over water in plastic cups there is no air and the water just sits their because the plant can't drink it all before it starts to affect it.you have to let them dry out a little after each watering . do you do that . get yourself a cheep water meter that you can stick into the root zone and only water when its about half way dry

Light: I am aware of the fact that my light sucks, didn't really have the time to get something better. Tomorrow I'll get some much stronger LED light than that I am using right now. Hope the babies will stop chasing the 'sunrise' and start to chill.
Soil: I used just some basic soil used for gardening I could find at hotel where I work. Hope it's not THAT bad and that the plants can survive until I get some better soil. It doesn't have neither of those, I'll definitely buy some perlite/vermiculite and mix it in. By the way will the plants mind if I put them in completely different soil from the one they are in right now? Can the drastic change do any harm to them?
Water: I can relate to your way of watering, so I think over watering was not the problem that caused the trouble. Today was the first day I mixed some nutrients into water, really small amount because I don't want to burn them. It's not the best fertilizer (again just something I found at the hotel), but it has some Potassium and Phosporus which I read are necessary for growing weed. I just hope I did not start too early with nutrients.
Thank you for your time man.

Another thing I see are the clear plastic cups you are using. The roots don't like the light.

I like using clear cups for starters. You can really keep track of how the roots are doing and know when to transplant. Just get a cup wrap from Starbucks to block light and you can take it off for a good look at the roots. You are drilling some holes in the bottom aren't you for drainage? Transplant when you see the roots reaching the bottom and sides of the cup. Twirl the cup a little in your hands, pressing in lightly till the soil breaks free from the sides. Then place the stem between your fingers and turn the cup upside down over the new container so most of the soil that drops free is caught by the new container. It will pop out in your hand. Place in new pot with soil to cover the bottom of the stem. Don't pack tight, let the water do that for you. Remember the bigger the pot the bigger the plant can get. Cannabis roots go DEEP so choose the tallest container you can manage at at least 5 gallon. I use 15 gallon and some larger. I'll post pics later.

That was the thinking behind using a clear cups, to see if something goes wrong in the root area and to know when to change to some bigger pot. I've put holes at the bottom at the very beggining of the grow of course and recently I added some small holes around the cup near the bottom trying to improve the 'breathing' of the soil and roots.
Thank you for advice on how to move the plant when it gets too big, that will be helpful in the future.

[Marley]

Cut a piece of paper or something to wrap around the cup to keep the lights from the roots.

I would guess the the lack of perlite in the soil isn't allowing it to dry out enough between waterings. Get a bag of it and mix it with the soil you're using for the next transplant.

I don't think humidity has anything to do with it.

also, If you're getting LEDs make sure they're meant for growing, or just get some "daylight"/"natural"/"cool white" CFLs instead.

[matejTiger]

Cut a piece of paper or something to wrap around the cup to keep the lights from the roots.

I would guess the the lack of perlite in the soil isn't allowing it to dry out enough between waterings. Get a bag of it and mix it with the soil you're using for the next transplant.

I don't think humidity has anything to do with it.

also, If you're getting LEDs make sure they're meant for growing, or just get some "daylight"/"natural"/"cool white" CFLs instead.

No need to do that anymore, today I finally got to visit a growshop and got them some nice 1,5l pots, also new soil (Plagron Lightmix) and a bag of perlite too. I decided to move them to new bigger pots right away, because I could already see a glimpse of roots at the bottom of the cups I used before. Everything looks much better now, altough the leaves still look little bit "sad". Hopefully more friendly enviroment they have now will fix that problem.

I also plugged in a small fan next to them, for better air circulation and because I was told stems will get thicker and stronger.

One thing I am worried about is the light, I couldn't afford any good one from the growshop, so I temporarily replaced old low power LED light with one that's stronger but to be honest I don't think it's meant for growing. I hope they can endure for one more week (10.5. I get my salary).

Thank you for your reply.

[Marley]

Awesome!

You can get cfl lights really cheap and they'll do a better job than a non growing specific LED.