What is attacking my plants? some wierd mildew?

What is causing my leaves to look like this?

it came on pretty fast. some have a couple leaves like this then all the sudden the whole plant…?

In veg…
79 degrees 60% humidity
dwc, ebb an flow, top drip… all have had the problem
AN Connoisseur ph perfect nutes
res water temp 75 degrees
All hyrdroponic with clay pebbles…

I see a number of red flags but first fill this out and give us more detail. Every question is important. I would also like to see pictures of the plant in natural or white light. The whole plant please.

COPY/PASTE the below list into your forum post.

Answer these simple questions the best you can.
If you do not know, or do not use something; Just say so; Or post
NA (non applicable)

What strain, Seed bank, or bag seed
Age of plant
Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF
Vessels: Pots, Grow beds, Buckets, fabric pots
PH and TDSof Water, Solution, runoff (if Applicable)
PPM/TDS or EC of nutrient solution if applicable
method used to measure PH and TDS
Indoor or Outdoor if indoor, size of grow space
Light system LED, MH/HPS/CMH/Fluorescents, or other
Actual wattage draw of lights
Current Light Schedule
Temps; Day, Night
Humidity; Day, Night
Ventilation system; Yes, No, Size
AC, Humidifier, De-humidifier,
Co2; Yes, No
If growing Hydro some additional questions:
DWC? RDWC? Autopots? Ebb and Flow? Other?
Distance of liquid below net pot (DWC)
Temperature of reservoir
TDS of nutrient solution

Always try to upload a clear picture in white light of any issues you may have to allow the community to assist you.

3 Likes

What strain, Seed bank, or bag seed. Animal Mints x White Larry from Surfr Seeds. Purple Tahoe from Greenpoint and clones
Age of plant from seed…2 week seedling stage plus 5 weeks veg.

Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF Animal Mints is DWC and Purple Tahoe is top drip hyro in clay pebbles/rockwool starter.
Vessels: Pots, Grow beds, Buckets, fabric pots - dwc/5 gallon buckets for now… purple tahoe is in 12"x12" square pot with the holes in the bottom and sides
PH and TDSof Water, Solution, runoff (if Applicable) Ph 6.8 PPM (500) <10 ppm. recirculating
PPM/TDS or EC of nutrient solution if applicable Ph 6.0 PPM (500) 650 ppm
method used to measure PH and TDS. Blue Lasbs combo meter
Indoor or Outdoor if indoor, size of grow space. indoor. room is 12’x12’
Light system LED, MH/HPS/CMH/Fluorescents, or other 600watt MH plus T5 HO 2 4’ bulbs
Actual wattage draw of lights @710 watts @ 4’x4’
Current Light Schedule 24/7
Temps; Day, Night 79 F
Humidity; Day, Night 60%
Ventilation system; Yes, No, Size 50 cfm fresh air (passive) 100 cfm exhaust with charcoal filter
AC, Humidifier, De-humidifier, In wall PTAC air conditioner, brings in fresh air. 50 ppd dehumidifier
Co2; Yes, No. no
If growing Hydro some additional questions:

DWC? RDWC? Autopots? Ebb and Flow? Other? DWC, top drip
Distance of liquid below net pot (DWC) 1/4"

Temperature of reservoir 70 F
TDS of nutrient solution 650 ppm 128L/hour with medium air stone… almost super saturated… uptake nutes more efficiently so ppms can be less…

Myfriendis410 ILGM Mentor
September 17

I see a number of red flags but first fill this out and give us more detail. Every question is important. I would also like to see pictures of the plant in natural or white light. The whole plant please.

COPY/PASTE the below list into your forum post.

Answer these simple questions the best you can.
If you do not know, or do not use something; Just say so; Or post
NA (non applicable)

What strain, Seed bank, or bag seed
Age of plant
Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF
Vessels: Pots, Grow beds, Buckets, fabric pots
PH and TDSof Water, Solution, runoff (if Applicable)
PPM/TDS or EC of nutrient solution if applicable
method used to measure PH and TDS
Indoor or Outdoor if indoor, size of grow space
Light system LED, MH/HPS/CMH/Fluorescents, or other
Actual wattage draw of lights
Current Light Schedule
Temps; Day, Night
Humidity; Day, Night
Ventilation system; Yes, No, Size
AC, Humidifier, De-humidifier,
Co2; Yes, No
If growing Hydro some additional questions:
DWC? RDWC? Autopots? Ebb and Flow? Other?
Distance of liquid below net pot (DWC)
Temperature of reservoir
TDS of nutrient solution

Always try to upload a clear picture in white light of any issues you may have to allow the community to assist you.

Discontinue top drip once plant’s roots hit rez. This is to prevent stem rot and damping off. 1/4" below net pot is too close: 1 1/2 to 2" depending on rate of air flow in rez. Should look like a ‘rolling boil’. TDS is fine for plants in veg.

the drip and the dwc are seperate. have 2 types of hydro going… top drip is in an ebb and flow type pot and the dwc are in net pots…

…and the air is definitely a rolling boil

the drip and the dwc are seperate. have 2 types of hydro going… top drip is in an ebb and flow type pot and the dwc are in net pots…

oh yeah… my net pots for dwc have a 2: shelf in the bottom so 1/4" below the net pot is 2 1/4" below the rockwool or rooted clone base.

…and the air is definitely a rolling boil

the drip and the dwc are seperate. have 2 types of hydro going… top drip is in an ebb and flow type pot and the dwc are in net pots…

so what are the red flags you saw numbers of in the first pic?

Myfriendis410 ILGM Mentor
September 17

I see a number of red flags but first fill this out and give us more detail. Every question is important. I would also like to see pictures of the plant in natural or white light. The whole plant please.

COPY/PASTE the below list into your forum post.

Answer these simple questions the best you can.
If you do not know, or do not use something; Just say so; Or post
NA (non applicable)

What strain, Seed bank, or bag seed
Age of plant
Method: Soil w/salt, Organic soil, Hydroponics, Aquaponics, KNF
Vessels: Pots, Grow beds, Buckets, fabric pots
PH and TDSof Water, Solution, runoff (if Applicable)
PPM/TDS or EC of nutrient solution if applicable
method used to measure PH and TDS
Indoor or Outdoor if indoor, size of grow space
Light system LED, MH/HPS/CMH/Fluorescents, or other
Actual wattage draw of lights
Current Light Schedule
Temps; Day, Night
Humidity; Day, Night
Ventilation system; Yes, No, Size
AC, Humidifier, De-humidifier,
Co2; Yes, No
If growing Hydro some additional questions:
DWC? RDWC? Autopots? Ebb and Flow? Other?
Distance of liquid below net pot (DWC)
Temperature of reservoir
TDS of nutrient solution

Always try to upload a clear picture in white light of any issues you may have to allow the community to assist you.

Normally an ebb and flow system is just that with no top feed.

I would still be worried about damping off with rez levels so close to net pot. TDS is in a good range, assume you’ve calibrated PH meter (I have the same one).

You have enough output on lights to meet your DLI so running 24/0 is using more electricity than you need to.

Are you running anything like Hydroguard?

You should have complete air exchange every 2 minutes or so.

None of which explains the leaf: unless it was down low and exposed to liquid?