Plant Problems! Please help .Pertaining to Leaf Burn

[whitewidow6]

My plants have 14 days, they are 4 Pandora`s autoflowering from Paradise Seeds,

I use a 400w MH bulb on a hydroponic flood and drain system.
I build my system from zero.
I use Flora Duo nutrients and roote accelerator.
The ph is around 6, I use filtered wather and lower the ph with ph down...
The temp is around 30 degrees Celcius, but i try to lower it by venting the grow room.
The lamp has a 33 cm hight from the tips of the plant.

My plants have some problems, the lower leafs are crispy and yelow between the nervs ... I don`t know if a nute burn or a problem from the heat,

I`ve uploaded some pics...

Please help,
Need advise quickly

Thx,
WhiteWidow

 

[cruzer101]

I would say back off nutes to half strength.
This happened to me in a water farm grow with flora nutes.

 

[Bublonichronic]

why would you choose to grow hydroponically using chemicals? u a distributer? soil organic for quality man...

 

[whitewidow6]

Do you think follial feeding had something to do with that burns ?
I used 1/4 strenth ...

It`s my first grow ... and i thought hydroponic was the way ... and I still think that ...

 

[Bublonichronic]

Do you think follial feeding had something to do with that burns ?
I used 1/4 strenth ...

It`s my first grow ... and i thought hydroponic was the way ... and I still think that ...

i understand, i did when i started too, i built a ebb n grow set up and ran it a couple times, they do grow faster ill say that... but do a little more reading on the subject my friend...

 

[whitewidow6]

i understand, i did when i started too, i built a ebb n grow set up and ran it a couple times, they do grow faster ill say that... but do a little more reading on the subject my friend...

I`ll try some outdoor`s next month ... they run cheaper
Do you have an opinion on my leaf burns ?

I`ve weaken the strenth to half ... do you think the light has somnething to do, or the follial feed ...
Waitn` for an answer
THx ...

PS what does "flushing" means ?

 

[Bublonichronic]

I don foliar feed, but then again being a medical patient imm all about Recreating a natural enviroment for my plants for best quality possible, but I think cuttin bac nutes will help also

 

[Bublonichronic]

Flushing prevent chemical bonds from formin in you medium that lock out nutriens to The plant... Should be done weekly IMO

 

[greenhydro420]

from what i see n yur pics, it looks like u over fed it. i have 8 feminized seeds of pandora and would LOVE TO SEE yur plant pics at day 63 so PLEASE keep us posted ....plants grow best at 72f to 76f,at 30c yur plants r to hot! they stop growing at 90f,plants grow best hydroponically within a ph range of 5.5 to 6.5 w/ 5.8,6.0 being ideal.....this info is by a pro grower called jeorge cervantes.....he is one of tha best,writes grow articles in high times and cannabis culture magazines.....KEEP US POSTED!!!

 

[whitewidow6]

from what i see n yur pics, it looks like u over fed it. i have 8 feminized seeds of pandora and would LOVE TO SEE yur plant pics at day 63 so PLEASE keep us posted ....plants grow best at 72f to 76f,at 30c yur plants r to hot! they stop growing at 90f,plants grow best hydroponically within a ph range of 5.5 to 6.5 w/ 5.8,6.0 being ideal.....this info is by a pro grower called jeorge cervantes.....he is one of tha best,writes grow articles in high times and cannabis culture magazines.....KEEP US POSTED!!!

Now the girls are 16 days and 2 of them begin the blooming stage, next week i will change the Mh bulb with a HID bulb
The temp is now ... 26 degrees celcius

I will keep u posted ... i`ll add some picz next week

 

[cruzer101]

Yea, only time I spray my plants is with a miticide.
Ya know, after looking at that one pic with the leaf edges curled a bit it may just heat stress but I still think you are better off at half strength nutes.

 

[whitewidow6]

Yea, only time I spray my plants is with a miticide.
Ya know, after looking at that one pic with the leaf edges curled a bit it may just heat stress but I still think you are better off at half strength nutes.

Thx for the info,
There are no new burns on the plants ,
all the plants are in flowering now ...
I`ll change the bulb and the nutes in a few days.

 

[whitewidow6]

New picz ..

Wait for comments

 

[cruzer101]

There ya go, that new growth looks fine. You are on your way now, good luck.

 

[whitewidow6]

Thx ... i will need it
I think there are some problems with the roots ... the hydroton is turning white and i don`t know it is the nuts or is mold
I will upload some picz ... in the next days ...

 

[greenhydro420]

thier doin good now growin like a champ,although dont like tha sound of yur hydroton tuning white so id keep a strong eye on that

 

[whitewidow6]

thier doin good now growin like a champ,although dont like tha sound of yur hydroton tuning white so id keep a strong eye on that

THx ... these are some picz of the hydroton,
I`ve flushed the substrat today because i`ve changed the nuts to flowering.
I wait some sugestions


The problem is between the dryed layer of hydroton and the wet layer.

 

[greenhydro420]

id take em out n wash em n palmolive and a light bleach water mix and maybe think about gettin a fungucide

 

[whitewidow6]

New pics, i`ve changed the tank and the hydroton .. had some leacking and some mold problems...

But i think it`s all good now
They are 33 days old...

peace

 

[greenhydro420]

they look good n healthy,keep it up!!