Help!!! Leaves are dying

[bighen]

my top leaves are turning yellow, and there are some brown spots on bottom leaves, water is 5 days old used RO water , I'm only using 40-60 percent of General Hydroponics Flora Series, can any one tell me what could this be and how to fix it?

 

[ukclonebank]

More details and pictures needed ,
How old are the plant's and at what stage ?
Set up , environment etc,
I could go on and on......

 

[Budsworth]

Just from looking at pics looks like youve over fed them... AKA... nute burn

 

[ukclonebank]

Thanks for adding pictures , that is deffo nutrient burn either what you have fed or what is in the medium already.
They can get through it though , heavy feed with water only until draining from bottom of pot then feed water only until fully recovered , and then I suggest turning down your feed strength ....

 

[bighen]

Week 4
400w hortilux blue MH 18inches away
PH 5.7
TDS 340PPM RO water was used beginning TDS was 10PPM
all the plants are blueberry kush there are 5 of them in there only 3 are like that, they all are in the rainforest 66

 

[bighen]

Thanks for adding pictures , that is deffo nutrient burn either what you have fed or what is in the medium already.
They can get through it though , heavy feed with water only until draining from bottom of pot then feed water only until fully recovered , and then I suggest turning down your feed strength ....

Im not sure I see what you mean by that, I only use 40-60% of the recommended dose General Hydroponics flora series

 

[bighen]

Thanks for adding pictures , that is deffo nutrient burn either what you have fed or what is in the medium already.
They can get through it though , heavy feed with water only until draining from bottom of pot then feed water only until fully recovered , and then I suggest turning down your feed strength ....

It's a DWC hydroponic with air stones in the bottom

 

[ukclonebank]

Recommended bla bla ,
I am telling you those plants are young and as a consequence they are burnt,
lower the strength , you will see.

 

[MrKringle]

hey mang, looks like a cal/mag prob. I grew some blueberry and had the same prob. good luck

 

[ukclonebank]

It's a DWC hydroponic with air stones in the bottom

Ok cool but still overfeed and burnt.

 

[bighen]

hey mang, looks like a cal/mag prob. I grew some blueberry and had the same prob. good luck

so should I flush the system put, new water add less nutes or should I add some Epsom salt or...?????

 

[Taviddude]

so should I flush the system put, new water add less nutes or should I add some Epsom salt or...?????

Dude, they've already given you the advice you need.
You're burning the shit out of them Man.
Don't ADD anything.
Give em straight RO water for a day, and start back on half the amount of nutrients you were using.

 

[ranchos429]

You need to use some sorta cal mag with ro water.

 

[bighen]

You need to use some sorta cal mag with ro water.

I just added 2 gallon of RO water. I also have some General Nutrients calimagic
but Im not sure how to use the Calimagic

 

[Taviddude]

I just added 2 gallon of RO water. I also have some General Nutrients calimagic
but Im not sure how to use the Calimagic

Start with water, and add Cal-Mag until you hit 100ppm. After that add whatever nutrients you normally do.

You need to use some sorta cal mag with ro water.

I use no cal-mag with RO water. GH Floranova has the same percentage of cal-mag as does GH's cal-mag supplement.
Plants healthy as can be.
Depends on what nutrients you're using.

Peace.
Tav

 

[bighen]

I have the GH floranova bloom and grow so you think i should do a flush

 

[bighen]

it was never the nutes, not leaf burn ect..... I started to do a large amount of research learned a lot spent an unbelievable amount of money on this problem an I finally figured out how to fix it, the problem is a sort of fungal infection/Rust/Leaf Septoria I have no idea how it happened but i got rid of my tent and built me a grow closet, check it out and my plants look amazing

 

[hexthat]

you couldn't bleach the tent?

 

[bighen]

at this point I just wanted out of the tent