dry/dying leaves :( please help me!?

Hey guys I have a problem with two out of my three babies and I was thinking that It could have been from me being an idiot and planting my germinated seeds upside down because they have a major stumped growth despite my indoor grow efforts from day dot. I have 2 40watt fluorescent lights and a fan set up for majority of the day to help thicken up the stems but nothing seems to be working I tried some nutrients to help promote root growth and prevent root rot but no difference. :c please help. they vegged for 4 weeks and are 2 weeks into flowering and just starting to show sex today.

I think nitrogen would make a dif for u.

Ihave had it happen to me and they just needed water i also cut the dead parts off but you have some other stuff going on here they are very small imo for 6 weeks ur lighting isnt very good either id getcthe lighrs as close as you can and water with nutes and it should come out of it in a few days
p.s i dont know how often you water only water if they need it as watering to often is a bad thing

N and stronger lighting

More info. How often are you watering.... What nutes, if any what are you giving it, how much and how often? Whats your ph?

Im watering basically when the top of the soil is dry so every two or three days I have no ph measure-er so I have no odea but I do filter my water before watering and only use luke warm water. My nutes are seasol whuch is a seaweed nutrient with blood and bone combination. My lighting isnt all that great so im seriously considering putting them outside the only problem is night time and early morning its around 5-10 degrees Celsius? Is that gonna cause me a problem?
Oh and im going to head down to get some NPK tomorrow morning first up

Yes looks like nitrogen deficiency.

ive started my manutec bloom booster to fix my nitrogen problem and I've added two new lights but they are showing sex already and are two small to yeild anything decent so i've germinated new seeds so i can start again properly :c i would still like to see these guys through till harvesting so I can have a little chop at least for being so damn patient and unknowledgeable. i just wanna know how many times do I feed and flush them with my nutes?

Your pH is off and it is causing nitrogen lockout. Get a pH meter. Even if it is a cheap soil probe from Home Depot. Until your pH is under control, use a nitrogen rich foliar spray as well. I like a kelp tea with aloe, or a diluted compost tea like Garrett's Juice, but if you are not using organics, chemical based options are available as well.

And put those babies back into veg hours. They aren't flowering and are no where near ready to begin. Allow them to develop at least four HEALTHY nodes of growth before trying to flower them. If necessary you can always bury some of the stem to help mitigate extra vertical growth.