YELLOWW! wtf is happening +rep

Ok well this is the third post about my 3 week old babies. seems like i started to have a little problem with shrivleing at the tips and yellowing... then it would go down the leaf and kill it... so i thought maybe i need to transfer. so i did , still dosnt fix. maybe i need to watch watering. i let dry first before water. and i have a moisture meter....so now im thinking its either... Too hot in there(temp gose from 80-90)(humidity from 27-40).. the 400w is too close (20'' from top) I dont have a fan blowing directly on them so it dosnt dry them out... the fans blowing at the light itself...

so now its a few days after the last time i asked... i had to chop the first two leafs (not the baby ones) but first actual leaf and the second sets start to yellow... some just start to dry and curl... some get a shade of yellow then die...idk whats wrong... take a look see what yall can tell me

well their in Hyponex soil... i think that has no nutes... its organic soil...

and here they are... im gettin so fustraighted im bout to give up so plz help... they look like they all can be saved... but they seem to only be getting worse..

all i can say is read this or find the pic that looks like what you got http://www.icmag.com/ic/showthread.php?t=11688

Even organic soils heave nutes in them a lot, check the bag. Slow your feeding regiment and if you're still worried flush your soil until the water running out is clear'ish. Stop chopping your plant apart too, they don't like it.

i havnt even fed it yet. im about to start because it just looks to me like it needs food. i looked at the soil bag and it dosnt say any specific just says organic soil some % perlite some % sand somethin n some other organic shit n thats it

thank you weedyo.. aside from the slight damage, they are some nice little fuckers thou

ok i wont chop anymore i figured i didnt want it to spread

the plants look fine bro. when plants are young like that they sometimes have the lower leaves yellow. its nothing to worry about. jst keep watering a regular schedule. the new growth looks fine to me that is what the most important thing is. jus water sit back n watch em grow.