decoloration from night/day temps difference ?

[skar]

hello,

just a thread to make disappear the last of my doubts...

I have ~20 plants in veg' under 600 + 400w..all are healthy as hell and don't show any sign of nutes burn or anything like that.

Only thing is that there is a decoloration going on some of the plants mainly on their tops at the center of the leaves.

After some searchs i found that it can be the difference of temperatures between nights a days.

Days temps are : 22°C to 25°C

Nights temps are : 10°C to 12°C.

So it make around 10°C difference...

Im' feeding them with AN 100% Organic line but they just geta light veg feeding at the moment.

Anyone can confirm the difference of temperatures cause from this pics ?

Thanks for your help.

skar

 

[BudLove]

Hey Skar,

From my experience, new growth is almost always lighter in shade than older growth.... If once the new growth completely unfolds, and turns the same shade as surrounding leaves, I think you'll be ok.

However, I couldnt help but notice (and it may simply be your camera or lighting) but it appears that in your first pic, the branch on the right has a leaf tip beginning to turn brown (about 5 o'clock).... again, this might just be the lighting or camera, but if it is turning brown, that would indicate a nute issue.

I personally would NOT attribute this to temps... more to either nutes, pH or just new growth tips. If you have your EC and pH in check, then it's just new growth - though I'm not sure that's what your pic shows.

BL

 

[m@rg]

20 c / 68f minimum for night time temps....any lower and u are gonna get alot of problems

u have got to get ur temps up ,before u flower

edit - ur baby looks sad from the pics,and looks like ur problems have just begun



safe

 

[Ploum]

How far are your lamps from the top of the plants ? It could also be a little apical chlorosis.
But m@rg is not wrong, 10°C sounds like a bit cold, try to add a heating or something like that for their nights.

 

[skar]

hi, thanks guys..yes i think it can be a defiency too..sadly...

I just seen some pics of a plant with caracterised zinc defiency..look a lot like what i have i think..i will try to flush then add a complement to help them...maybe my PH wasn't good i need to recalibre the PHtester i have..bad PH can lock up zinc as many other things...i prefer to check two times the PHtester than one.

thanks again and peace

 

[DIGITALHIPPY]

thats a zinc/mag/cal def... a good one too.....
you need to get some sensi-cal....and do a flush with it ... 5 ml/gal....for this time.

 

[skar]

thanks for the advice DIGITALHIPPY ! you the man

only problem is we doesn't have "sensi-cal here in EU i think..i need to check my shop for the moment i will go with a good flush.

Are they any products in tha AN 100% organic line i can use for the flush in the wait of sensi-cal if i even find it... ???

 

[DIGITALHIPPY]

you need ANY suppliment that provides secondary minerals.
cal-mag is OK, but is missing most of the stuff.
you need molybdenium, boron, calcium, sulfer, iron, zinc, magnesium.....

if you cant get a suppliment like that. id just add some epsom salt to a gal of water (tablespoon)(one gallon) its mainly a mag def anyway.
i dont think AN has other products that have the minerals in it like that.... u could try giving her some tea.(mother earth tea) ....
but it seams you are already.

its just a secondary mineral def. water and epsom...will fix it..
do a foliar of the water and epsoms....your plant will like that.

 

[skar]

thanks for your help i appreciate it. In years of indoor it's the first time i see that on my plants..might have to check somethings...

ok so i take it as a MAG + others secondary minerals defiency..i have some epsom salt on my hands so i will use it as soon as tomorrow in the morning (it's midnight here).

thanks again to take the time to help

skar

 

[DIGITALHIPPY]

thanks for your help i appreciate it. In years of indoor it's the first time i see that on my plants..might have to check somethings...

ok so i take it as a MAG + others secondary minerals..i have some epsom slat on my hands so i will use it as soon as tomorrow in the morning (it's midnight here).

thanks again to take the time to help

skar

nice, do a foliar or just water the leafs, itll help her recover faster.

 

[skar]

so i flushed them this morning with 1tablespoon epsom salt per gallon..and i just did a foliar with a lighter epsom dose.

not a big deal i think..first day i saw this thing going on i did a little flush with 1/4 of the usual ATA-Oragnics growth-C..it contain trace of many secondary minerals..and i have all the time to let them recover before i put them in 12/12. I flip when all is green so...

thanks again DIGITALHIPPY i will post pics when they will start to recover.

peace

 

[skar]

so, some of the plants start to recover and the green color is coming back.

BUT, i'm wondering where this defiency come from as it's the very first time i have that and it's at the same time i try some new nutes.

With ata-Organics i NEVER had any deficiency..even less in veg'

I just started to use AN Organic line and bammm > defiency at week 3.

Maybe i did something wrong but i seriously plane to return at my old schedule...i'll just add Sweetleaf, Humic/fulvic and OrganicB.

any thoughts anyone ?

peace

 

[ElectroSticky]

Sweetleaf

SWEETLEAF IS GOOOD!!!!!!!!!!!!!!!!!!!!!



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