What is this!?

ETHERR

Member

• Apr 13, 2019

• #1

I have just noticed today (week 5) Brown spot/stains have just appeared on couple of the fan leaves ?? Any clue to why Brown spots/stains occur

 

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Jypsy Dog

Well-Known Member

• Apr 13, 2019

• #2

With the lack of grow info.... Calcium.

 

ETHERR

Member

• Apr 13, 2019

• #3

Am growing in Scott's organic soil (3 months slow release nutrients) with added perlites
Water once every 2 days grow in closet with 3 bulbs 2 cfl 1 LED
Fan blowing air around
Temp at 26/28 degrees

 

Jimdamick

Well-Known Member

• Apr 13, 2019

• #4

Your plant look good, I just think that your affected leaves are just showing their age.
At this point you might want to add some Calmag to your water, as around this time they probably could use a little boost.
Good luck

 

SoMe_EfFin_MasS_HoLe

Well-Known Member

• Apr 13, 2019

• #5

Or it could be the water droplets that I see on your leaves. Water droplets act like a magnifying glass under light. It will cause spots that look exactly like the ones you have. Spray leaves right before lights out.

 

C

Cooksbayboy

Member

• Apr 13, 2019

• #6

What is your ph run off

 

C

Cooksbayboy

Member

• Apr 13, 2019

• #7

SoMe_EfFin_MasS_HoLe said:

Or it could be the water droplets that I see on your leaves. Water droplets act like a magnifying glass under light. It will cause spots that look exactly like the ones you have. Spray leaves right before lights out.

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It doesn't look like like that too me,could be wrong

 

ETHERR

Member

• Apr 13, 2019

• #8

I am not sure do not have ph test

 

C

Cooksbayboy

Member

• Apr 13, 2019

• #9

It might be a ph issue,I'm leaning that way if your not monitoring ph

 

JohnDee

Well-Known Member

• Apr 13, 2019

• #10

Cooksbayboy said:

What is your ph run off

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Not needed to monitor ph in organic soil grow and runoff provides no useful data...

 

danjac82

Well-Known Member

• Apr 13, 2019

• #11

The never ending obsession with Ph. Oh how did anyone ever keep a plant healthy before? Lol. Chasing ph when time can be spent doing better things

 

ETHERR

Member

• Apr 13, 2019

• #12

Update: hey guys over night the leaves got worse and still am not sure what is causing this

 

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Aussieaceae

Well-Known Member

• Apr 13, 2019

• #13

Hi ETHERR,

You sure you're not overwatering?

 

ETHERR

Member

• Apr 13, 2019

• #14

I mean I water once every 2 days and last watered yesterday morning and it does still look a bit damp but I've never run into this problem be for tho?

 

Aussieaceae

Well-Known Member

• Apr 13, 2019

• #15

ETHERR said:

I mean I water once every 2 days and last watered yesterday morning and it does still look a bit damp but I've never run into this problem be for tho?

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I'd keep it in mind, it might be a contributor.

Just looking again, and have to ask whether it's heat from that bulb? I realize it's cfl, but the damage looks to be right below the bulb?

 

ETHERR

Member

• Apr 13, 2019

• #16

I don't think it's the bulbs I put my hand in front for miniute and was not hot enough to do that ?

 

Aussieaceae

Well-Known Member

• Apr 13, 2019

• #17

ETHERR said:

I don't think it's the bulbs I put my hand in front for miniute and was not hot enough to do that ?

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Cool, well i'd suspect something at the rootzone otherwise.

I'd suspect you might be overwatering a touch tbh. Watering more often would dissolve the slow release fertilizer faster too.

I'd be tempted to top dress with a little lime, it should help if it's a nutrient issue. Likely cut down on watering slightly too, maybe every 3rd day instead of every 2nd?

Does look like something at the rootzone to me.

Good luck mate, hope it helps.

 

Last edited: Apr 13, 2019

SoMe_EfFin_MasS_HoLe

Well-Known Member

• Apr 14, 2019

• #18

Cooksbayboy said:

What is your ph run off

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Actually it could be from the light being magnified by the water. It does look like this when it happens. Also, if you look at the lower growth there is water on the leaves. This is why I said that too the op. It could be a ph issue, though checking run off does nothing in true organic soil. The soil will buffer the ph on it' own provided you're using the correct soil or recipe.

 

SoMe_EfFin_MasS_HoLe

Well-Known Member

• Apr 14, 2019

• #19

ETHERR said:

I don't think it's the bulbs I put my hand in front for miniute and was not hot enough to do that ?

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With led you do not need to feel heat in order to get burn. Even in low temperatures you can still burn/bleach the plant if the light is too close.

What brand is your light and how far away from the canopy is your light.

 

kratos015

Well-Known Member

• Apr 14, 2019

• #20

Aussieaceae said:

Cool, well i'd suspect something at the rootzone otherwise.

I'd suspect you might be overwatering a touch tbh. Watering more often would dissolve the slow release fertilizer faster too.

I'd be tempted to top dress with a little lime, it should help if it's a nutrient issue. Likely cut down on watering slightly too, maybe every 3rd day instead of every 2nd?

Does look like something at the rootzone to me.

Good luck mate, hope it helps.

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I'm gonna second this. Overwatering will cause all of the issues you're experiencing, as well as the ones everyone else has brought up.

Overwatering causes those brown spots, phantom Ca/Mg/P/K deficiencies, and so much more.

That plant is still rather tiny, so it isn't going to need much water.

The plant looks good overall, just stop watering as often and you'll notice improvements on the new growth.