Depends on the current temp. If it goes up and the plants are too close they will burn. Just use cooltubes to get them as close as possible without burn, which can cause major issues.
Most common problem in the hydro room is pathogens in the res. To stop this and avoid in future use H2O2 , 50% grade at 1000:1 EVERY 4 DAYS in the res.
35% grade at 750:1 every 4 days in the res, 90% grade at 1800:1
. Buy it in bulk and use long gloves and eyeware.
Only go out there at dawn. When people get ripped its either their growing partner, someone they showed or someone WHO SAW YOUR PARKED CAR while you were in there tending or preparing.
Yes its singing "dont give up on me baby, we can still come true" but alas i think its fucked. Its severely nute burnt and the soil caused it.
Dont use that soil again and throw that old scruffy thing in the rubbish.
Its too hot and having the cfls 3" away is making things worse. Raise the light and work out a way to get it below 80. Exhaust fans for eg. Mh in cooltubes.
The clones still look ok, reduce watering and dont feed till they take hold in the soil, which can take 2 weeks or more.
Dr who is right that 'magic sauce' you gave them burnt the crap out of them, even the hairs were singed. Flush very well with lots of runoff. The plant was already suffering from salt build up giving you yellow leaves, this is what happens in most soils. To avoid the yellowing use coco. Also...
You have gone from one problem to another. I think the original problem was overwatering, to correct this you burned it , then you gave it a rough house transplant thinking that would solve the issues, also you stressed it by fimming it. Never transplant a sick plant.
i agree the light was too close to that part of the plant causing burn and heat stress. Get some cooltubes so you can get the 600w to 6" from the tops and a lot more final weight.
Also i dont like that medium, sticks, woodchips, fuckin sawdust and a cocktail of other stuff that dope hates growing in.
Use coco next time top quality coco, not husky cheap shit.
What is 'GC' .? Anyway the seedlings are overwatered. When you start in giant pots that take weeks to dry this happens, not enough O2 in there. Reduce watering and use much smaller pots next time for babies.
Plants are starving. Get some hydro veg nutes in there asap. Start at half str then full every feed/watering after that. feed every watering. You cant expect plants to grow in a perlite without feeding bro.
With some soil the salt really builds up by this stage , when salt builds up the plant cant take up N and other nutes.
Flush well but i dont think it will change much. Next time use a quality coco mix wit hydro nutes and you wont get the yellowing issue which will give you a reduced harvest...