new growth yellowing

[Alaska]

Newbie here from Ak. Growing in rockwool inserted into lava w/drip system.
New to hydro growing and still awaiting proper nutrients to arrive. (life in the sticks) Until it's arrival I'm simply using a liquid miracle grow.
Does this look like nutrient burn? plants are are 18 days old

 

[Ekoostik_Hookah]

ya kinda, but when i get burn, its norm. on the tips for some reason.
is the MG high in Nitrogen?
Maybe its lacking N a little bit.
But when that leaf grows out a bit, it should go green. alot of times, my new growth is yellow too
maybe its sulfer.......check this link http://www.marijuanapassion.com/forum/showthread.php?t=19739

 

[Alaska]

i'm not sure of the ph as i am awaitingt it's freight arrival along w/ proper hydro nutes, should i just give water until it arrives? (maybe 6 days) (we are in remote ) no stop lights no police) just snow

 

[stonedsmithy]

wots the npk level on the stuff your feeding them now an yeah maybe just water for a few days but yeah does look like there lacking in nitrogen a bit

 

[Wise Man]

Looks like pH is off.If it was lack of nitrogen the lower leaves would fade to a green/yellow colour.

 

[That crazy vancouver guy]

I'd just go with water for a few days or at least cut back on the nutes to almost nothing, at least. and keep an eye on the ph.

 

[Alaska]

they're getting a 12-4-8 liquid all purpoe miracle grow from a reservoir with 10 gallons in it, I'm kinda new to this hydro, What is an ...npk level?

 

[That crazy vancouver guy]

and friend... you have to be using nutrients specifically taylored to growing dope. mj is a stubborn weed, and need a lot of tlc. money put into it will come out tenfold.

 

[Wise Man]

NPK is the symbol on ferts to indicate how much nutrients are in that product.

eg. 25-15-10.

 

[Alaska]

thank you that's what i thought then i guess i'm missing micro nutrients ? and i'm giving them too much miraclegro?

 

[Alaska]

you guys helped, I've been giving the burned plants just water twice daily and they seem to be recovering. They aren't growing full tilt, but making progress. Still some yellowing remaining but my nutrients and ph tester should be here in a day or so. (depending on the mail planes) any other suggestions are definitely welcome. Take a look at the difference in 5 days

 

[Growdude]

Did you get your nutes yet? what did you order? Do you have a way to check PH?