Is this a deficiency or toxicity?

Hey guys, I have a couple plants 3 weeks old with some big issues. The lower leaves are dying and I don't know if this is a deficiency or toxicity? Im growing in soil. I started with nutritions a week ago. The temp is 25c and humdity is around 60. Here are some pics of the ladies in green

Is it soil? What kind? Looks like Coco or peat in the pictures.

Its just soil that I bought from a gardenshop, idk exactly what kind. But there s also things like wood in it. What do you think of the leaves? You think it's a nute burn or a deficiency?

That looks like nute burn to me. Soil still may be a bit hot for too many extra nutrients, if any at all. Looks like your overall environment is good, so I wouldn't sweat it too much. It's going to be a guessing game for cause and effect if you're unsure of what the soil contains.

Burnt tips = excess typically not a deficiency….or wind burn. I’d say they got too much nutrient but they will recover

I also measured the ph in the soil and it was a bit on the high side for soil, it was 7.3 while in soil you have to stay within 6 to 7 max. So the best thing for me to do is just give regular water with a 6.5 ph right? And just wait it out before feeding again? The lower leaves are dying fast

IMO carry on. That particular leaf is an early leaf set ( 3 finger ) and usually will be expendable. Worry only if issue were systemic throughout plant.

Matter of fact you can clip it off if you like.
Soil does look a bit compacted ( no perlite ) also unknown what NPK ( nute density ) it may have.

I started to worry because they were healthy and beautiful looking just a week ago, and things changed very fast. I will just give it some water till I see that they need nutes. I was worrying because some leaves were dying while they were still green

Anyway to show your soil brand or bag ?

That way we can find out whats in it.

I actually dont have any bag left, I remember that it does have nutes in it. It just didnt say what nutes or what the npk ratio is. It was brandless soil. Last grow I used the same on some autoflowers but started feeding in late veg stage and didnt have these issues at all. Btw I just watered them with ph 6.5, no nutes anymore till they are hungry

Good, keep giving only PH water for now, a plant that small that has burnt tips = No Bueno
measure your water with ec meter, to know what's your starting point, and raise it slowly or lower it from there according to the plants.

Thanx for the help guys, I really appreciatie it. I will just ph water them and I will post some pics after a couple days to show how its going. Much love guys

tyke1973 said:

nothing first to come first to die be fine just check every 1.2 and hit them with wee bit of pk

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I ain't used a ph pen for 10 year buy some aping water till they build strong legs rhizatonic