Seedling Problem, Yellowing and Twisting of Leaves

[SweetIndica2]

Please read my post again, i said you were wrong as far as humidity being the cause of my problems. Obviously i know that humidity is good in vegetive growth, but the humidity has nothing to do with my problems. No offense taken man, i did come off a little harsh.

 

[Frozenguy]

Yeah, but like you said, you dont grow from seeds often. Look how young his plants are. These aren't clones, they're seedlings.

i said i dont grow from seed often. but i have grown out over 40 seeds in the last 5 months.. relative to the amount of plants i've grown in one grow let alone all together, that is not that many plants. but these plants i'm talking about right now are seeds.. i havn't mentioned anything about clones at all.. infact, clones i root under florescents.. clones would eat themselves up if i used an hid. and i'm even sure its possible to put clones under hids.. but i havn't tried.

the fact is, the light is not the issue lol.. so lets get off it

 

[bonecarver_OG]

SI2 - yeah man its surprising how little light clones needs to root. one 18 W fluoro roots clones in about 1 weeks time - and still i keep a difusing semitransparent plastic inbetween them. - very good point

rubberband . u got a good point there too thre is two ways lights can affect negativelly plants:
heat - too much evaporation and necrosis in leaf
too much light - plant cant handle all the energy its getting and the leaf die because the roots cant suck up enough water for them - the leaf will try cloe it up to avoid evaporation. u see that a lot outdoors in high climates. during siesta time it can get up to 50 celsius - 120 fahrenheit + 80 % humidity.. but they seem to thrive as long as they have water and love hehe

the sun burn example is an interesting one :

do not compare nature with indoor growing. in nature there is several stages of light a day, depending on time of year, day, clouds, atmospheric angle to the sun etc etc. they all filter the sun to different spectras of light. also there is other factors..

from the link i posted in other post earlier:

"Reference Points
Outside Daylight: This is the biggy! Direct outside daylight in the summer time is somewhere in the neighborhood of 10,000 foot candles. This is equal to 10,000 lumens per square foot. If you already know a little bit about lighting, you will find this really amazing. If not, as our discussion continues this will eventually hit you as amazing.

Overcast Daylight: 1,000 foot candles. = 1000 lumens per square foot

Open Shade: While standing under a large tall tree, you experience the amount of light referred to as open shade. The light intensity you experience here is somewhere in the neighborhood of 300 lumens per square foot

Deep Shade: 50 to 100 lumens per square foot

Average Lit Room: 5 to 10 lumens per square foot

Full Moonlight: .02 lumens per square foot

Starlight: .00011 foot candles (that's 11 one-millionths )

Now is this amazing or what?"

so much good info in that quote! think about the main difference in these lumens of artificial light and the sun light is the complete spectra of the sunlight.

remember cold is not goona hurt the plant untill it goes down to almost freezing. cold night temps is more of a bigger trouble in flowering because the lack of P will affect the flowering severelly. but instead will increase potency.

check this: http://weedfarmer.com/growing_guide/temperature.php

"Low temperatures at night are OK down to about 60 degrees outdoors (in celsius: 15-16) , then start to effect the growth in a big way. Mid 50s (12-13 celsius) will cause mild shock and 40s (4-5 celsius) will kill your plants with repeated exposure. Keep your plants warm, especially the roots. Elevate pots if you think the ground is sucking the heat out of the roots. This is an issue if you have a slab or other type of cold floor."

in our greenhouse it was only about 4 celsius for about a few hours every night. for about a month and they still were far from dead. but u dont want that indoors anyway but i dont think u get ur room that cold?

frozen - ur right seedlings are MUCH more sensitive than clones. clones are adult plants that can have years of age. is not the same as taking a new born baby seedling - even with a few weeks of age. clones once rooted handle light very well.

the importance of humidity as a problem factor is exadgerated - it only can induce mould in bad ventilated conditions. here where i live we have 80% humidity the year around..

i bet its possible to use a hid as a light source for cloning - jus use a semi transparent white filter - like a white glass or tupper ware box - and keep them far away from the light.


soon im setting up all fluoro 47 000 lumen for a 1,5 x 1 area of veg. thats a LOT.

and ur completelly right LIGHT is propably not the issue. but it was an interesting discussion.

as i said before the plants look like they are just gonna grow out of it - as long as the soil is good etc. in soil there is no need to give nutes to plants untill about after a month really. how are u doing with nutes etc? and the soil ph etc? and water ph etc?

peace all

sorry for having too much spare time - hope im not ofending any one

any more pics of them - close up of the leaf? as clear as possible?

 

[SweetIndica2]

How can't i compare nature to indoor growing? Your information, just proved my point. If daylight can be as high as 10,00 lumens per sq. ft. theres no way in hell a 1000w is going to burn a plant from light abundance. Honestly, i think i could put the light as close as possible...as long as theres no heat there shouldn't be any problem. From what i've seen, the more light the better...i have seen no adverse affects from "too much light".

Seedlings are definately not more delicate than a clone bro. Clones are ALOT more finnicky than seedlings from my, and many others experiences.

I don't take info from weedfarmer, i've seen plenty of info from weedfarmer that is false, i like my info from reliable sources. But, all that info you posted is useless anyways, it's not like i'm new to growing bro. I know everything you just posted, i know my ph, i know when to give nutes, etc. I mean i have had a bunch of very successful harvests, it's not like i'm going into this not knowing jack shit.

 

[bonecarver_OG]

oops - sorry did i ofend u? how?

the quotes were only to give an other view to compare with our coops experiences. we have more than 10 years of growing indoor, soil and hydro experience.

clones are only more finicky untill u get ur tech right we have a 100% germing rate with noo hormones. but seeds are like lotteries genetics can mess up.

the difference is the sun and the light bulbs spectras its not only lumens thats light....

i didnt want to make u feel " not knowing jack shit " - sorry bro.

are the plants getting better or not ? wasnt it the main issue of this thread?

anyway - did ya even get to read the last lines? of the post above?....

peace