Help me please!! I've got 10 sick babies!!!

This in an unknown strain of hand watered hydro (i know, i know)
400w light
70-78 degrees

looks to me like a nitrogen deficiency but i've no idea really how to fix this. Also, Im not sure thats what it is, im just going by what i've read/seen here. Could it be the chlorine in the tap water? I had read somewhere that chlorine is not a problem, as long as the water comp doesn't use chlorimine which is chlorine and ammonia, I believe. They were only transplanted into the larger rockwools about a week ago. Moved up light a few days ago as it was a lil warm (80). Please, if anyone has any ideas......

What in the world are you growing those in?

Anyway, it looks like they need:
1. Airflow. Get a fan.
2. Water. I have no idea what you're doing, never heard of a hand watered hydro set-up before.

Thanks for the quick reply. I actually do have a fan running. Plants have been watered, with ph adjusted to around 5.5, should I be using nutes already tho? This is why I asked about the chlorine in the tapwater.

Shorty42079 said:

Thanks for the quick reply. I actually do have a fan running. Plants have been watered, with ph adjusted to around 5.5, should I be using nutes already tho? This is why I asked about the chlorine in the tapwater.

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Also, use distilled water and yes, those plants are big enough to start taking vegetative nutes. pH should be a little higher than 5.5, but that's about right. Chlorine is actually a micronutrient that the plant requires, but in very small quantities; some strains are pickier about it than others. I just use distilled because it's cheap and I know exactly whats going in the plant. Plants grown with distilled smoke a little smoother in the end; but thats debatable as a good flush does the same thing.

I run a lot of hand watered hydro (perlite containers). When you're using a soil less base you have to start feeding almost right away after they sprout. Make sure your ph is 5.7-6.0 and start around 500 ppm and work your way up until you see the tips burning just a little. Then back down about 100ppm.