Heat stress or overwatering?

[Barna94]

Hello guys!
Does anyone know what I did wrong ?
My planta are at the end of week 3, two days ago I gave them a heavy watering as I had to go away for the weekend, when I got back some of the pants iny grow room are looking like this.
I dont know if it's because of overwatering, heat stress on anything else.
Thanks

 

[Flatrate]

Looks nute burnt.

 

[curious2garden]

Nutrient burned

 

[Barna94]

Thanks for the reply, could it be nute burn because of overwatering ?
I give them same feeding and only q couple of them turned out like that, and any suggestions on how to fix it ? Cheers

 

[crimsonecho]

you could try giving them straight water for a couple of weeks the leaves will not recover so you can actually pluck the burnt ones and maybe a flush for the badly burned plants to remove all the excess nutrients out of your medium and stop overwatering

 

[White_Devil_Cannabis]

Your PH was off which caused nutrients to lock out and others to rise to toxic levels. Since it was a large watering it saturated the soil with bad ph and roots had nowhere to go for safety so the wetter you got the soil the worse the plant burned, if you ony gave a little water the plants would likely have done better due to soil buffers.

 

[Barna94]

Thanks for the replies, im just letting the soil dry and im gonna try flushing them with ph water, hope that wont make it worse fingers crossed
Ps I never had problems when using canna coco no more biobizz

 

[New weed grower]

you could try giving them straight water for a couple of weeks the leaves will not recover so you can actually pluck the burnt ones and maybe a flush for the badly burned plants to remove all the excess nutrients out of your medium and stop overwatering

Sorry for jumping in here but I always search before I make a thread...
Think I'm having a little nute burn, you say no nutes for a couple of weeks, just plain water? Mines only tiny at the tips, how long do you think I should give her just water before feeding nutes again? I had just upped my level of nutes from 2.5ml in 2L of water to 5mls in 2L, so I'll go back to the smaller amount when I feed again.

 

[crimsonecho]

Sorry for jumping in here but I always search before I make a thread...
Think I'm having a little nute burn, you say no nutes for a couple of weeks, just plain water? Mines only tiny at the tips, how long do you think I should give her just water before feeding nutes again? I had just upped my level of nutes from 2.5ml in 2L of water to 5mls in 2L, so I'll go back to the smaller amount when I feed again.

i think you should give it plain water a couple of times and then start off with lower dose as you said and watch their response if you notice progression in the burn symptoms back off again.

its just a matter of dialing in the specific plant every seed is a different plant and they dont all like the same stuff at the same amounts thats why its much easier to grow from clones over and over again

 

[LeastExpectedGrower]

I wouldn't stop feeding altogether. I'd water to a good amount of runoff with pH'ed water and check the EC of the runoff towards the end of the drain-off to see if you can get it down to a reasonable point (if you're both burning and having possible lock out). I'd then take your next water/feed and do it at half of what you were and go from there, ratchet it up if the plants start looking deficient, etc.