Veg stage / seedlings yellowing stumped growth

[Tob522]

My seedlings are yellowing some are gripping down but others twisting up.

it was hitting 33 under 4 x400 hps so I’ve just turned them down to 250.

ihad them under a t5 for two weeks prior.

they have been in here a week just done a light mix of ph water at 1.3 nut mix

is it the heat and is there a way to claw back?

thanks

 

[go go kid]

your just wasting electricity with 4 400w's for seedlings.

what yu growing in?

 

[Tob522]

your just wasting electricity with 4 400w's for seedlings.

what yu growing in?

in coco
They were propped for 2 weeks and then 2 weeks under t5 50w florecent

 

[go go kid]

whats your feeding regiems and how offten you feeding

 

[Tob522]

whats your feeding regiems and how offten you feeding

it’s an auto pot system. I was like misting / light watering until last week and then put them in the autopot I t’s like a self watering eat what they want (I thought)

 

[Tob522]

No one?

 

[BigBudsNPK]

Holy hell! That's like killing a unicorn with like... a bomb. If I had to run your equipment I would have used one light placed further away... but then the stretch. You need a different light for veg to get them ready for HPS Armageddon.

 

[Tob522]

Holy hell! That's like killing a unicorn with like... a bomb. If I had to run your equipment I would have used one light placed further away... but then the stretch. You need a different light for veg to get them ready for HPS Armageddon.

You recon turn them down to 250 or just put the t5 back in?

and start again or revive?

cheers

 

[buyyouabeer]

Do they ever get a dry cycle; looks pretty damp? Small plants in large containers. Yellowing can be from root rot and I see some necrosis on your leaves. Normal light picture would help.

 

[BigBudsNPK]

You recon turn them down to 250 or just put the t5 back in?

and start again or revive?

cheers

Nah you were definitely ready to step up the T5 but 50w to 1,600w is too much of a leap. You want about 500-600par which is achievable at different wattages and heights. With led you can put the lights within 6in no problem and get the par you need at a heat they can tolerate.

All that light made them transpire too quickly and absorb too many nutrients. I would start over personally, but I know some people would try to fix it to not waste the time and effort.

 

[Tob522]

Do they ever get a dry cycle; looks pretty damp? Small plants in large containers. Yellowing can be from root rot and I see some necrosis on your leaves. Normal light picture would help.

No the pots sit in trays and use a valve to fill up the water when it’s low, I think they’re supposed to take what they need, similar to the iws system!

I’ll get some day pics

 

[Tob522]

Nah you were definitely ready to step up the T5 but 50w to 1,600w is too much of a leap. You want about 500-600par which is achievable at different wattages and heights. With led you can put the lights within 6in no problem and get the par you need at a heat they can tolerate.

All that light made them transpire too quickly and absorb too many nutrients. I would start over personally, but I know some people would try to fix it to not waste the time and effort.

I see what you’re saying I didn’t really think about the combine wattage more to what was above the plants!

 

[BigBudsNPK]

I see what you’re saying I didn’t really think about the combine wattage more to what was above the plants!

It's not the simplest thing growing this herb, but just remember that a mistake is only a mistake because you've now learned the truth. ︎

 

[Doggonewild]

Way to big a pot way to much much light use t5 till Atleast two or three foot of vegetation seriously bro calm down use those hps when ur like holy f this thing is getting big and is pretty as f then its time for the beast btw u will never need four 400s in that small room maybe at most two 600s or one 1000 on a mover i say growing weed is like cooking never cook on a empty stomach never grow unless u already stoned dont think its gonna happen over night its a long process even after its ready to cut u gotta wait dry cure etc id suggest starting over much love brother ive been there myself