What the hell is happening to my plant??Lightburn again??

[oldcarp]

The same thing happened last time but to both plants. This time its only the Dinafem Blue cheese on the right. Running 600 watt HPS I had the light down lower a month or so ago and was using a lux meter and i kept everything under 82,000 lux at a canopy heighth of around 17 inches. Then the brown came so i raised the light to 21 inches and the lux was low 70,000. Temps are 77 degrees with 45% humidity. I use cal-mag 5 ml per gallon about once every 3 weeks or so and it still aint helping. on the last pic u can see the fruit spirit ( white widow ) is thriving. What the hell am i doing wrong for the second time in a row??!! Using a brand new Ushio 600 watt HPS. I go feed feed water, feed feed water during flower

 

[ISK]

The same thing happened last time but to both plants. This time its only the Dinafem Blue cheese on the right. Running 600 watt HPS I had the light down lower a month or so ago and was using a lux meter and i kept everything under 82,000 lux at a canopy heighth of around 17 inches. Then the brown came so i raised the light to 21 inches and the lux was low 70,000. Temps are 77 degrees with 45% humidity. I use cal-mag 5 ml per gallon about once every 3 weeks or so and it still aint helping. on the last pic u can see the fruit spirit ( white widow ) is thriving. What the hell am i doing wrong for the second time in a row??!! Using a brand new Ushio 600 watt HPS. I go feed feed water, feed feed waterView attachment 3880976 View attachment 3880977 View attachment 3880977 View attachment 3880976 View attachment 3880978 View attachment 3880976 View attachment 3880977 View attachment 3880978 View attachment 3880979 View attachment 3880981 View attachment 3880982 View attachment 3880976 View attachment 3880977 View attachment 3880978 View attachment 3880979 View attachment 3880981 View attachment 3880982 during flower

I think we will need a few more pic's to understand the issues

 

[oldcarp]

Are you just kidding or do you really need more pics Cant you see the brown?

 

[oldcarp]

I think we will need a few more pic's to understand the issues

 

[brimck325]

what medium are u growing in?

 

[oldcarp]

what medium are u growing in?

soil with lots of perlite

 

[bryan oconner]

i was going to say magnesium. is the bottom of the plants the same or only the tops closest to the lights ? hard to say with a pic . my educated guess . the ph is to low well below 4.5 or start to get burned from the light or the magnesium is to low.
http://www.growweedeasy.com/marijuana-symptoms-pictures

 

[oldcarp]

I think we will need a few more pic's to understand the issues

Did you get to see my additional pics ISK?

 

[oldcarp]

i was going to say magnesium. is the bottom of the plants the same or only the tops closest to the lights ? hard to say with a pic . my educated guess . the ph is to low well below 4.5 or start to get burned from the light or the magnesium is to low.
http://www.growweedeasy.com/marijuana-symptoms-pictures

Thanks Bryan! My PH is ALWAYS 6 - 6,3 and I use cal mag every 3 weeks at 5 ml gallon and only the leaves on the top but i have it a 21 inches from the canopy. Are the pics not showing the slight browning on the leaves?

 

[BabyAndaconda420]

Thanks Bryan! My PH is ALWAYS 6 - 6,3 and I use cal mag every 3 weeks at 5 ml gallon and only the leaves on the top but i have it a 21 inches from the canopy. Are the pics not showing the slight browning on the leaves?

Every 3 weeks?I use cal mag everytime I feed.

 

[brimck325]

soil ph should be 6.5-6.8 i think...

 

[budman111]

I use cal-mag 5 ml per gallon about once every 3 weeks or so and it still aint helping

You just answered your own question, up the dosage as it a calcium/Magnesium deficiency with the rusty spots.

 

[BabyAndaconda420]

You just answered your own question, up the dosage as it a calcium/Magnesium deficiency with the rusty spots.

Thank u bro

 

[tpc_mikey]

Just curious what are you feeding them?

 

[oldcarp]

Just curious what are you feeding them?

blue planet nutrients

 

[oldcarp]

You just answered your own question, up the dosage as it a calcium/Magnesium deficiency with the rusty spots.

Thank you Budman!
What should i up the dosage to?
10 ml per gallon and should i use it everytime i water or feed with nutes??
Do you think i should spray some on the leaves at night and at what dosage should i use for spraying the leaves??

 

[westcoast420]

What week are those in? What kind of ppm are you giving them?

 

[oldcarp]

What week are those in? What kind of ppm are you giving them?

Hello West coast 420! i am at the end of week 4 and i dont have a ppm meter i do make sure to have some runoff everytime i feed or water and the PH runoff is between 6-6.5

 

[im4satori]

Thank you Budman!
What should i up the dosage to?
10 ml per gallon and should i use it everytime i water or feed with nutes??
Do you think i should spray some on the leaves at night and at what dosage should i use for spraying the leaves??

10mls is too much if your using it frequently

heres the thing

your not calcium def

your magnesium def

calcium and magnesium compete within the plant for absorption
raise the calcium lower the magnesium uptake

calmag has more calcium than magnesium so adding more might make it worse

I would keep using the calmag at maybe 5mls per gallon with nutes every other watering and also add 1 gram of Epsom salt per gallon to up your magnesium

 

[westcoast420]

Without know what blue planet nutes you are giving them its pretty hard to help. What feeding schedule and what strength are u giving them?