sick plants with pics... only 2 weeks old

My babies were germinated on the first of the year in their rockwool cubes. Since then they've been under 24 hours of fluorscent and the leaves are starting to turn yellow as you can see. I would like to say at this point that ive given them NOTHING but water and light and a heatpad. and i suppose you can count the rockwool too. In a seperate thread:
https://www.rollitup.org/indoor-growing/148785-how-do-you-feel-about.html
i concluded that the water im using is naturally pHed because it comes directly from the great lakes. So my question is can i have a nutrient deficiency after only 2 weeks of life? also i plan on putting them under my 400W MH soon and do you think its a good idea to transpant into my faxfarm soil at this point?

And yea, it looks to me as if i have 2 different problems since the one is yellowing with brown tips and the other has all brown, frajile leaves.... almost crispy. any help/suggestions would be cool

Fuck the site wont let me post the pics... says a security token is missing...... im gonna post this and try again

ok heres the pics... had to upload one at a time, not all at once...

Because they all present the same symptom I'd suppose that the source of the problem is the exterior conditions. What temps and humidity are there? Is the heat plate set too high? Do you have chloramide or chilorine in your tap water (chlorine evaporates, the other one doesn't)? What's the pH of your water?

correct me if I'm wrong but I thought yellow leaves = lack of nitrogen?

dude your ph theory is hilarious "the great lakes" oh yeah i forgot they ph those lakes lol. ph the water to 5.5 or 5.6 and wait to see what happens under nute will not burn off the leaves like that . are your cubes too wet or too dry? keep them moist and watch that ph start feeding very lightly when they start to look healthy.

robotninja said:

correct me if I'm wrong but I thought yellow leaves = lack of nitrogen?

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yellow leaves can mean a whole bunch of things. Here, take a look:

http://www.icmag.com/ic/showthread.php?p=163835&mode=linear#post163835

depending on the period in their life and on the conditions, leaves can turn yellow for very different reasons in very different ways.

well my whole theory behind the great lakes is not that the water is phed regularly but that since its a natural source of water it should be perfect to grow plants. Correct me if im wrong but if the ph of water in a pond or lake is toxic to plants i would think there would be far less plants growing around the pond or lake. idk... i guess it has to be the ph of the medium tho cuz i gave them nothing.... ill ph the water in question and repost

come_gr0w_with_us said:

well my whole theory behind the great lakes is not that the water is phed regularly but that since its a natural source of water it should be perfect to grow plants. Correct me if im wrong but if the ph of water in a pond or lake is toxic to plants i would think there would be far less plants growing around the pond or lake. idk... i guess it has to be the ph of the medium tho cuz i gave them nothing.... ill ph the water in question and repost

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Just to finish a thought: different plants require different soil pH. The plants around the ponds have a different pH requirement. Also, don't believe that the whole pond is treated. Water is extracted from the pond and then sent to a treatment facility, where the fluorides, chlorine or chloramide are added.