Plants dying. New grower. Pls help.

[Bubblehashluv4life]

My plants leaves turn bright green and then die. Starting from bottom and spreading to top. Brown spots on leaves. Started with one indica. Now both sativas same thing happening. I dont want them to die. Especially mid flower. Pls help!

 

[Ponky]

Calcium deficiency or lockout. What do you feed? And what kind of media is it. And how much water how often? Cal Mag. Most likely.

 

[Bubblehashluv4life]

I feed tap water. Ph usually between 5.9-6.4. Straight from tap ph of 8.0 so i add ph down. My indica has shit scotts premium potting soil. And 2 sativas were in happy frog as seedling. Then transplanted to ocean forest. I water about once a week with 3-4mg of cal mag plus and a bit o fox farm bloom nutes. Pots are fabric. 5 gal for indica and 3 gal for 2 sativas.

 

[Ponky]

When you mix this tap water do you aerate it first? Sometimes my ph will bounce. For example I can fill a bucket and ph it to 6.0. And I put the air stone in and come back hour later and it's back up to near 8.0. So I add a bit more PH down. Come back and then it finally holds a ph of 6.0.
Another corrective course of action I sometimes use is just rinsing the plant with the hose to wash out the soil. Then feed it like normal the next watering.
The plants look a bit wired. Do you have a powerful light?

 

[Bubblehashluv4life]

When you mix this tap water do you aerate it first? Sometimes my ph will bounce. For example I can fill a bucket and ph it to 6.0. And I put the air stone in and come back hour later and it's back up to near 8.0. So I add a bit more PH down. Come back and then it finally holds a ph of 6.0.
Another corrective course of action I sometimes use is just rinsing the plant with the hose to wash out the soil. Then feed it like normal the next watering.
The plants look a bit wired. Do you have a powerful light?

I do not aerate it atm. I should prolly start tho. I have a spider farmer s2000 led light. I also thought they look wiry. Maybe light is too far away. Its about 16" above plants at 80% power.

 

[RealizedReal000]

I would check the mediums ph using a tester of some sort. Or a slurry test or test runoff. Then if all the parameters are good then next step would be to add more cal mag.

 

[Bubblehashluv4life]

I would check the mediums ph using a tester of some sort. Or a slurry test or test runoff. Then if all the parameters are good then next step would be to add more cal mag.

Thanks. I have a bluelab ph tester and test everytime. Maybe i should try increasing calmag.

 

[One drop]

The one in the Scots premium has a lot of wood bark in it it's causing nitrogen draw down from the plant in first pic the bark is taking N away from your plant as the bark compost down . Regards OD .

 

[Bubblehashluv4life]

The one in the Scots premium has a lot of wood bark in it it's causing nitrogen draw down from the plant in first pic the bark is taking N away from your plant as the bark compost down . Regards OD .

Omg. Ty so much. I will increase nitrogen immediately. But what about my sativas in ocean forest? Same thing is happening to them.

 

[mancorn]

I water about once a week with 3-4mg of cal mag plus and a bit o bloom nutes.

If you’re just using a bit of bloom and CalMag you’re under feeding. Give it some Big Grow.
fox farm
fox farm
fox farm
fox farm
fox farm

 

[One drop]

Omg. Ty so much. I will increase nitrogen immediately. But what about my sativas in ocean forest? Same thing is happening to them.

Up there's as well

 

[corn.everywhere]

I'm not terribly experienced, but 16" at 80 percent on that light seems like alot. this is my first run with my sf2000 I've had to keep mine 24-30 inches above the canopy, I initially had it a bit lower at like 80 percent and my girls didnt like it one bit, some bleaching and very slow growth. I'm also in veg so I'm sure that makes a difference

 

[Pondracer]

I use 800w Mammoth Folds and even at 90%, within 10" the plants are not showing stress. Probably depends a lot on strain and light.

 

[FuriousStyles]

Potassium Deficiency

Potassium is the “k” in your N/P/K Ratio. Like Nitrogen and Phosphorus, it is known as a “Macro nutrient”, and is one of the three main elements neede...

percysgrowroom.com

 

[FuriousStyles]

You probably have too much calcium rather than not enough. While beneficial, too much locks out a lot of nutrients like P and K. Stop using the Ph down, since the Calcium is already buffering down the Ph for a bit and add some kelp meal.
Might be too late for this run to make a HUGE turn around, but you should see big improvement (especially from dropping the ph down) and gain knowledge for the next go.