Potassium deficiency ?

[Green Refuge]

Starting to see lightening around the edges which is indicative of potassium deficiency but its happening mostly on the mid to upper portion of the plant which is throwing me off. Any ideas ? Medium is roots organic original. Temps 70-78. Humidity on low side 25-50%. 4 bulb T5 in a 2x4. Been feeding it once or twice a week at 600 ppm and 6.5 ph. I have a soil ph pen I will use it Tonight to double check.

 

[Nixs]

My noob eye doesn't see any K deficiency.

 

[Billytheluther]

What tupe of water..and what were you feeding??

 

[Green Refuge]

My noob eye doesn't see any K deficiency.

It's hard to see in the pictures but there's lighting/fading going on the edges of the leaves. I'm readying that's almost never K deficiency in veg but I'm not sure. A lot of conflicting info about weed deficiency.

 

[Green Refuge]

What tupe of water..and what were you feeding??

Lately I been using filtered water 0 ppm and addingcalmag to it. I was using well water but I stopped when it came back positive for coliform bacteria e coli.

 

[Billytheluther]

It's hard to see in the pictures but there's lighting/fading going on the edges of the leaves. I'm readying that's almost never K deficiency in veg but I'm not sure. A lot of conflicting info about weed deficiency.

we will never know untill he tells us wat he feeds

 

[Nixs]

It's hard to see in the pictures but there's lighting/fading going on the edges of the leaves. I'm readying that's almost never K deficiency in veg but I'm not sure. A lot of conflicting info about weed deficiency.

With my very modest experience, I have only noticed K def. in mid flower.

 

[Green Refuge]

we will never know untill he tells us wat he feeds

I feed organic magic food.

Amazon.com

 

[Billytheluther]

Lately I been using filtered water 0 ppm and addingcalmag to it. I was using well water but I stopped when it came back positive for coliform bacteria e coli.

How much cal mag ppm wise

 

[Green Refuge]

How much cal mag ppm wise

80-100 ppm calmag plus

 

[Green Refuge]

Could it possibly be from the sodium in calmag causing light burn from the T5 ? I never had a plant burn from T5.

 

[visajoe1]

im thinking early magnesium deficiency

 

[catdaddy516]

It's looking like a mag issue. If you could, foliar feed with the solution you feed with or just some calmag plus if it's possible.

 

[Green Refuge]

Update on bottom leaves. Top still has lightning around edges. I foliar sprayed epsom a couple times in the last week or so.

 

[catdaddy516]

Update on bottom leaves. Top still has lightning around edges. I foliar sprayed epsom a couple times in the last week or so.

At what strength?
Did you feed and foliar shortly after or are you just foliar feeding?

This is the plant that was displaying the same exact issue yours is displaying, but after feeding and some applications of foliage feeding my nutrient solution at 650ppms every few days, she was back on track.

Make sure you use a wetting agent and to get both sides of the leaves.

 

[Green Refuge]

At what strength?
Did you feed and foliar shortly after or are you just foliar feeding?

This is the plant that was displaying the same exact issue yours is displaying, but after feeding and some applications of foliage feeding my nutrient solution at 650ppms every few days, she was back on track.
View attachment 5074272
Make sure you use a wetting agent and to get both sides of the leaves.

1 teaspoon per gallon. Foliar feed yesterday and today I watered the soil with 1 tspn per gallon. I wasn't trying flood the plant with mag but it's not showing signs of improvement so I'm increase the dose/frequency of epsom. I definitely need to invest in some yucca. I have a non ionic surfactant but I'm scared to try it on my weed plants. I use it with herbicides.

 

[catdaddy516]

Just to keep it simple, this is what I use daddio.

Seventh Generation Free & Clear Liquid Dish Soap - 19 fl oz

Read reviews and buy Seventh Generation Free & Clear Liquid Dish Soap - 19 fl oz at Target. Choose from contactless Same Day Delivery, Drive Up and more.

www.target.com

If the problem persist, try foliar feeding the food you use as well. If you're not too sure about at what strength, start out with 500 ppms.

 

[Green Refuge]

Just to keep it simple, this is what I use daddio.

Seventh Generation Free & Clear Liquid Dish Soap - 19 fl oz

Read reviews and buy Seventh Generation Free & Clear Liquid Dish Soap - 19 fl oz at Target. Choose from contactless Same Day Delivery, Drive Up and more.

www.target.com

If the problem persist, try foliar feeding the food you use as well. If you're not too sure about at what strength, start out with 500 ppms.

Appreciate it brotha. Coping that first thing in the morning.