Plant question with pics

[bgmike8]

Different plants than my previous post.
Night temps 85
Day temps 67
Aero/hydro hybrid
Bunch of 600 watt hid
Hard water

Wondering about the yellow in the leaves. Is this light burn?

 

[firsttimeARE]

Mg def

 

[smokinrav]

That looks like a nitrogen deficiency from not maintaining veg ferts through the first two weeks of flower, the stretch.

 

[bgmike8]

Mg def? In hard water??

 

[firsttimeARE]

Did you get your water tested? Could be calcium rich which id an antagonist to Mg absorption.

Just a thought

 

[bgmike8]

What do you think about this curling/cupping?

 

[firsttimeARE]

What do you think about this curling/cupping?

Looks like N toxicity. Try posting pictures without the HPS on so we can get a look at leaf color

 

[bgmike8]

Looks like N toxicity. Try posting pictures without the HPS on so we can get a look at leaf color

 

[Trickyticky]

Fuck me . That's not happened over night . That is toxicity of nitrogen mixed in with light bleaching .

 

[firsttimeARE]

Def nitrogen tox. How much are you feeding them and what are you feeding them?

Try and keep Potassium:Calcium:Magnesium at a 4:2:1 ratio as a starting point. Most plants will enjoy this. Some may require tweaking.

Otherwise they mess with eachothers absorption.

Look up Mulders Chart. It shows every nutrients protagonist and antagonist in terms of nutrient absorption

Mulder’s Chart of Plant Nutrient Interactions | Permaculture Noosa

permaculturenoosa.com.au

How the arrows work is if its pointing towards a nutrient it affects that nutrient. Some nutrients effect each other in both directions. Like Potassium and Magnesium for instance. As you can see Calcium affects the uptake of 7 different nutrients.

 

[bgmike8]

Ty.
So i was feeding gh flora 3 part per chart. Plus some hydroguard.
Then i switched to lucas ratio. 40 ml micro 80 ml bloom. And i also bumped,that up,to 50. 100. But this was already developing...

Im in a quasi aero setup. I guess i should flush immediately and get a good look at my roots....???

 

[firsttimeARE]

Ty.
So i was feeding gh flora 3 part per chart. Plus some hydroguard.
Then i switched to lucas ratio. 40 ml micro 80 ml bloom. And i also bumped,that up,to 50. 100. But this was already developing...

Im in a quasi aero setup. I guess i should flush immediately and get a good look at my roots....???

40ml and 80ml per gallon?

 

[bgmike8]

40ml and 80ml per gallon?

God damn me im retarded. Im so sorry.
Thats for 5 gal. So 8. 16. And then 10 20