yellowing on lower leaves, need help asap!!!

Yea well title explains it and the pics dont lie... i fed them shults general plant food 2 times (10-15-10) and im not overwatering them. the only other thing that might have some adverse effect would be that there are no drainage holes in the bottom of the pots cause i cant get the area wet... it has to be some kind of nutrient deff, also the stems are deep red bordering on purple. seeing as how this is my first grow i need all the help i can get. thanks for the help.

ps theyre about 20 days old or so

All I have to say is DRAINAGE HOLES....... Put a tray under or somthing... but they need them, Also you should get a fan in there to strengthen those stems man. On your leave yellowing... I couldnt tell you.. it could be drain holes but Im not sure. But you should get on that ASAP.

i do have a fan in there you just cant see it in the pics
thx for the reply

i really need all of your help to save my babys... the yellowing has gotten worse and the stems are still purple i really dont want this grow to fail and need some help!!! much appreciater

could it be root lock???

it is disease. Youn should cut yellow leaves of 1 plant and take that plant far away from others. and if he is going to be ok then cut other plants yellow leaves

first off,your using food for flowering not veg,most likely not enough nitrogen,and get some drainage holes in there just water over sink and let drain,o and you may want to flush before changing your nut's

don't cut off the yellow leaves,they will tell you if things get better.

You need drainage and I would tansplant into bigger pots (8inch aka one gallon pots), the purple is definately lack of nitrogen but this could be because of the soil conditions. I would not use 10-15-10 nute for that stage if you can't get equal measures i.e 10-10-10 or better 10-1-1 in nitrogen then don't use it. For seedling and vegging nitrogen has to be greater than or equal measure to P-K. This is vital.

for precise diagnosis look at the chart I just posted titled "you need this"