Is this PH?

about 10 days out of soil. started seeing this as just those waxy spots and a bit of droopage about 4-5 days ago during the second set of fan leaf emergence. is this ph? there is some mild brownage, but i have only nuted them once since they sprouted, somewhere around 1/4 strength. the one pictured is actually the biggest and strongest of the 3 seedlings i have so far, but only one of the others showed a bit of brown (and that one i could tell was DEFINITELY the nutes) and was only slightly at the tip, but easy for me to diagnose. this is different. any thoughts?

so, a self-served bump with a bit more info
1. the Fert i used was FFBigBloom, half strength, probably just weaker than that.

2. the soil being used is a Perlite, MG Organic, and some Jiffy seed starting soil (which i believe is mostly peat moss?) at about 15%/60%/25% respectively.

3. temps have been a bit out of control recently due to a broken thermostat in the house. a couple times it has gotten to the low 60's, though i don't believe any lower than that, when lights out. lights on have had some pretty cold times as well, especially in the early day, and if not thoroughly checked (again regulating temp has been hard) the temps have gotten in the mid 90's, though usually not for more than a few hours.

thanks again

24 views, help a brutha out! really though, maybe even MG Organic has time release in it? i thought being organic it wouldn't though.

They're young. They don't need any fertilizing. I bet they'll recover fine.

well you got your soil and need to stick it out for a bit IMO just because thay are curling a bit may be from a genetic mutation or soil or many different things. your plants are still tiny and very green so i'm not sure what you are trying to point out? (not to be snide) keep them comfy and dont over water them. you will have to look to new leaves to see if the "issue" continues, yuo cant change the leafe structure that is already formed

thelightison said:

well you got your soil and need to stick it out for a bit IMO just because thay are curling a bit may be from a genetic mutation or soil or many different things. your plants are still tiny and very green so i'm not sure what you are trying to point out? (not to be snide) keep them comfy and dont over water them. you will have to look to new leaves to see if the "issue" continues, yuo cant change the leafe structure that is already formed

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Agreed, wait it out and leave the nutes out for about another 7 days. Give them 2 weeks before you even start to think about feeding them. They will pull through, make sure that the water you are using is Ph'ed correctly. I personally use chilled rain water and it works wonders.

so ya iam definitely starting to think its heat, cuz it got worse today. woke up 2 hours after lights on, and the temps were MUCH hotter than they should be. needless to say, they look worse. and sorry, to be specific i was wondering whether you guys thought it was PH before, as i havnt had the means to accurately test my soil OR my water.

things have gotten worse. i hope it pulls through this.

-edit- oh and incase anyone is wondering, the white dust is just some Diatomaceus Earth. saw a few cralwers but nothing major so i sprinked some on the surface.