Curling browning leaves

[Emperorsplif]

What Strain is it?
2 white rhino 2 northern lights

Is it Indica, Sativa or Hybrid? What percentages?
Think they are both indica

How Many Plants?
4

Is it in Vegetative or Flowering Stage?
Veg

If in Vegetative Stage... How Long?
Seeds were put in rockwool on May 15th

Indoor or Outdoor?
Indoor

Soil or Hydro?
Hydro

If Hydro, Reservoir size?
24 litres around 6 gallons

If Hydro, Reservoir Temperature?
Res temp floats between 70 and 75. I know its too high but can't get it down.

If Hydro, what type of Medium?
Hydrotron

If Hydro, what type of Setup?
DWC

Size (Wattage) of Light? How Many?
23watts. 10 bulbs

Is it Air Cooled?
there is a window A/C unit

Temperature of Room/Cabinet?
75

RH of Room/Cabinet?
40%

PH of Medium or Reservoir?
currently 6

Any Pests?
none seen

Type and Strength of Fertilizers used?
They are on clean ph balance tap water after a res change.

Size or Square Footage of Room?
6 square feet

So yesterday I notice my plants had browned and curled. See pics below.

This is not my first grow but is my first hydro. See journal in my Sig.

 

[homegrown1]

Re: Curling , browning leaves.

From what I know looks like a nutrient (plant mix etc.) burn. 1st method ...What I have done in the past was to flush with filtered/distilled water until you see the water running from the bottom of the pot look clear and not brown from the mix your using. 2nd method or you can try but I wouldn't recommend taking out of the pot you have it in and flushing the roots directly. You still have choices and I have saved a plant by doing the first method. Never mind I read your doing hydro definitely flush the roots system. Good luck and I hope I was helpful just a bit. I know there are many more individuals that may know a bit more and have a different if not a much more better solution then me.

 

[Emperorsplif]

Re: Curling , browning leaves.

Is it possible that it's because they are kind of sitting on the panda film?

 

[homegrown1]

Re: Curling , browning leaves.

No, I do not believe that its due to panda film. If anything the film will reflect light back up to the plant which in turn is a good thing.

 

[jammie]

Re: Curling , browning leaves.

that's nute burn. decrease your ec by 50% for a week or so