Fan leaves getting a disease

[Bumazaj]

I'm growing 3 plants: white widow, power plant and purple haze; all feminized. I water them every 3 days. I started Fertz at 14 days old, half dosage. They get Fertz every other watering; and i will make it every watering soon.

now, at age 22 days, the Purple Haze started showing light green spots, which seems is changing to brownish.

They're under 400W MH, placed around 2-3 feet high. The other plants are very healthy.

Is it Nitrogen deficiency?

 

[gardenandcats]

Nitrogen defiency is a very over all yellowing ..For one thing your fertilizing to often fertilize 1 times a week only.Plain water the rest of the week.Usually they don't need nutes until after the 3rd week. Cut back on your ferts and go 1/2 strength the next feeding..

 

[rockydog]

Nitrogen defiency is a very over all yellowing ..For one thing your fertilizing to often fertilize 1 times a week only.Plain water the rest of the week.Usually they don't need nutes until after the 3rd week. Cut back on your ferts and go 1/2 strength the next feeding..

I agree with this. Over watering and over fertilizing are 2 of the most common issues with growing. Just because the top of the soil looks dry, doesnt mean the bottom is dry too. Check down 2" in the soil and see how that soil looks prior to watering. Also learn what strength your plants like b starting at low doses. I usually start at 1/4 strength and work my way up.

 

[eyeslikedonuts]

'Sup dude :ciao:. Dont overthink the leaves, never leads to good things :hairpull:. I would worry if it worsens. Ive heard of so many losing plants from reading excessively into leaves. Mybe u have a small bug problem starting. good luck. Oh BTW they look good man. my 0.02. peace, e :bong2:

 

[mastersativa]

sounds like bugs to me. you better check all avenues bro.

 

[Bumazaj]

the place is very clean. if it was bugs, it would make sense if the other plants had it too.

 

[shuggy4105]

From the pics they look good man.
MJ can take as much nutes as you want to give it-as long as it`s built up over a period of time. if done correctly, you can give nutes every watering.
begin with a very dilluted amount and increase with every watering.keep your peepers open for any adverse affects:watchplant:
Brown/Rust spots over the entire plants fan leaves, is an indication of over-fert. however if you spray your plants with water, whilst the lights are on, the water spots can act as a magnifying glass drops,leaving little yellow/brown patches, mimicing a nutrient problem or spider mites .
check the under-side of your leaves for the critters moving.
Although if bugs are the problem,it stands to reason that "all" the plants will be affected, and showing signs, given enough time.
This is also the case with over-fert etc, "all" plants should have the problem.
what`s the "PH" of your soil run-off?
BTW, you can lower your light closer to the plant tops, about 12-16" from the tops.
if you leave it where it is,this will cause them to stretch.
get a fan blowing directly onto your gals, as this will take care of the heat issues-aswell as strenthening the stems.
Or it could be over-watering, after i`ve viewed the pics.
if only 1 plant is affected, what did you do different with that plant?
here`s a light chart that always comes in handy...

 

[jash]

why you keep your light at 2-3 feet high?

 

[Bumazaj]

is it possible that "Haze" strains are more sensitive to Nuts than others? I grew Silver Haze before (along with other strains), and it easily got Nuts burns.

I just checked the plant again. It's forming small yellow/brown spots (same place of light green), which looks like Nuts burn. The Nuts i introduced was diluted to 1/2. I'll switch to 1/4 from now on, and see how it goes.

It might be over-watering also. I started with watering every other day. But I had to cut down, because the soil was too wet. I'll watch for that too.

About the height: i'm gonna move the plants higher; i was just too lazy to look for something to put under the plants

 

[Oscar]

Just to rule out pests....get a loop and look under the leaf!

 

[PurpleSkunk]

why you keep your light at 2-3 feet high?

i second this if i was you i would lower the light to about 6 to 8 inches from plants,stick your hand on top to see if gets burned if not your fine u will have to raise light often thought.as for the leaves i wouldnt worry doesnt look to bad.keep up the good work.PS

 

[Bumazaj]

Update:

the plant has shown yellow spots everywhere, which definitely looks like Nuts burn. Makes sense; they started appearing right after i introduced Nuts. I guess 1/2 diluted was still too strong.

I gave it a good flush. Hopefully she'll catch up with the other plants.

Also, i tested the PH for the water i'm using (bottled water). It was 6.0! Any suggestions?

 

[shuggy4105]

between 6.3 - 6.9 is ideal.she doesn`t seem too badly burnt.