What is this ?

Brettman

Well-Known Member

• Feb 22, 2021

• #1

First off all thanks for taking the time to help me. I found some dark gray patches on one of my plants today, I immediately cut off the affected leaves but I’m now wondering if it is just a phosphorous deficiency.

Temps are 85 lights on 60 lights off, humidity is 20-30%. I flipped 2 weeks ago, medium is half perlite half regular MG soil. No other nutes givin yet.
I have a journal going on here under the name Hazeman KQBF if that helps.

 

Brettman

Well-Known Member

• Feb 22, 2021

• #2

This plant in particular hasn’t looked as good as the others for a while now. And is quite a bit smaller.

 

Brettman

Well-Known Member

• Feb 23, 2021

• #3

Just gonna go ahead and give this a little bump here lol.

This is it today, still looks perky but it’s on more leaves then yesterday now..

 

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jondamon

Well-Known Member

• Feb 23, 2021

• #4

How many fungus gnats do you have on that yellow sticky.

that could be causing your issues.

 

Brettman

Well-Known Member

• Feb 23, 2021

• #5

jondamon said:

How many fungus gnats do you have on that yellow sticky.

that could be causing your issues.

Click to expand...

Lots of gnats lol. The stickies keep there population down pretty good. You think the gray spots could be from gnats ? I’ve had them on and off for years.

 

Brettman

Well-Known Member

• Feb 23, 2021

• #6

I’ve been putting 2-3” of perlite on top of my soil but it hasn’t helped.

 

jondamon

Well-Known Member

• Feb 23, 2021

• #7

Brettman said:

I’ve been putting 2-3” of perlite on top of my soil but it hasn’t helped.

Click to expand...

Mosquito dunks

gnatroll

gnatoff

spinosad

Apply as a root drench.

The eggs and larva are in your medium.

 

Brettman

Well-Known Member

• Feb 23, 2021

• #8

jondamon said:

Mosquito dunks

gnatroll

gnatoff

spinosad

Apply as a root drench.

The eggs and larva are in your medium.

Click to expand...

Ok, I have mosquito dunks, I’ve tried them in the past. I have been oil, does that work for gnats ? What’s the difference between the three products you mention ?

 

jondamon

Well-Known Member

• Feb 23, 2021

• #9

Brettman said:

Ok, I have mosquito dunks, I’ve tried them in the past. I have been oil, does that work for gnats ? What’s the difference between the three products you mention ?

Click to expand...

Mosquito dunks, gnatrol and Gnatoff all contain BT bacteria to kill the gnats.

spinosad is a different form of bacteria.

I was giving you different products that can be found so you knew what to look for.

I haven’t used Neem oil for Gnats.