Need help clarifying my leaf problem...

C

captainforest

Member

• Nov 7, 2020

• #1

Hey guys! Just wanted to clarify the problem I'm experiencing ... not so sure if this is led burn, nutrient burn or a ph problem... just recently found out that my probe was not calibrated and it was swinging below ph 4.

I'm currently running two RDWC setups with 8x 5 gallon buckets and 450w (from wall) led, 15 inches above canopy; one being the vegetation area and another being the flowering. I would feed my ladies around 500-800 ppm. Each are showing similar but somewhat different signs of led burn, nutrient burn or a ph problem ... I am confused.

Hope you guys can help! Photos seen below.

Vegetating Plant 1:


Flowering Plant 2:

 

Hobbes

Well-Known Member

• Nov 7, 2020

• #2

.

Click the chart to enlarge. Looks like some nutrient burn and perhaps a mag def,.

 

HydroKid239

Well-Known Member

• Nov 7, 2020

• #3

Also looks like you went heavy on the Nitrogen. Dark green glossy leaves. Tips curling down on you.

 

CannabisErecticus

Well-Known Member

• Nov 7, 2020

• #4

The thing is with ph problems is that it can resemble many other deficiencies. By looking at your leaf discoloration ph would be the most likely culprit. Get your ph in check

 

C

captainforest

Member

• Nov 27, 2020

• #5

CannabisErecticus said:

The thing is with ph problems is that it can resemble many other deficiencies. By looking at your leaf discoloration ph would be the most likely culprit. Get your ph in check

Click to expand...

Thanks for this! Replaced my water weekly and it seemed to have solved the fluctuations!

 

C

captainforest

Member

• Nov 27, 2020

• #6

Hey guys, is this led burn? It’s placed 24 inches away from the canopy from a 450 watt wall draw LED fixture.

 

Attachments

• 
  F461CFFB-A6EF-476F-A1AA-63ECB7B82100.jpeg

  1.6 MB · Views: 18

C

captainforest

Member

• Nov 27, 2020

• #7

Also getting these weird gray spots on my ladies ... what could this be?

 

Attachments

• 
  4DEBC5F8-FD64-4118-8ED8-2861E55D61E4.jpeg

  1.8 MB · Views: 17

C

captainforest

Member

• Nov 27, 2020

• #8

Hobbes said:

.

Click the chart to enlarge. Looks like some nutrient burn and perhaps a mag def,.

View attachment 4736419

View attachment 4736420

Click to expand...

Thanks for the share! Definitely keeping these in my notes

 

C

captainforest

Member

• Nov 27, 2020

• #9

captainforest said:

Also getting these weird gray spots on my ladies ... what could this be?

Click to expand...

New spots came in and they’re really white lol

are these molds??? But they don’t look powdery at all ... more like the pigment disappeared

 

Attachments

• 
  385B8D8A-B2DC-4F5C-9824-42F2E7902C97.jpeg

  2.7 MB · Views: 10
• 
  44E9AC11-D747-4B80-9599-DEFA6B21B637.jpeg

  1.5 MB · Views: 9

Last edited: Nov 27, 2020

C

captainforest

Member

• Nov 27, 2020

• #10

This lady also has had this color shade and pattern her whole life ... is this normal?

 

Attachments

• 
  5710D5C9-637D-4BA1-AD48-022E361AA8DC.jpeg

  1.9 MB · Views: 9
• 
  FA57DD6B-57AD-4445-84B4-C29F61A3402F.jpeg

  2.2 MB · Views: 9

Last edited: Nov 27, 2020

C

captainforest

Member

• Nov 27, 2020

• #11

This is my system btw! Newbie here hope to get some advice! Thanks!

Recirculating waterfall dwc
2 sets of:

4 by 8 grow tent
1/4 hp chiller; water temp 21c
65 gallon water volume
Two Sf4000 spider farmer (450w draw)
12w uv sterilized
500 ppm
5.8 ph swings up to 6.5

Other led now is a bestva. About to get the other spiderfarmer

 

Attachments

• 
  95A81024-5AEE-4FC9-9529-FE791595F4BF.jpeg

  4 MB · Views: 11

Last edited: Nov 27, 2020

C

captainforest

Member

• Nov 27, 2020

• #12

Its really messy cause the other rooms were under construction which just finished... the dust and heat affected these ladies for the first few months

 

C

captainforest

Member

• Nov 27, 2020

• #13

Aand these are my roots currently chilled at 21c! These are 30 gallon totes

 

Attachments

• 
  0457048A-C667-4D6B-A269-014B5AB5A76B.jpeg

  2 MB · Views: 8

Last edited: Nov 27, 2020

Hobbes

Well-Known Member

• Nov 27, 2020

• #14

.

How's the leaf problem? Has it stopped spreading?

Nice grow!

.

 

Hobbes

Well-Known Member

• Nov 27, 2020

• #15

captainforest said:

Also getting these weird gray spots on my ladies ... what could this be?

Click to expand...

Doesn't look like powdery mildew.

 

C

captainforest

Member

• Nov 27, 2020

• #16

Hobbes said:

.

How's the leaf problem? Has it stopped spreading?

Nice grow!

.

Click to expand...

Thanks but i think ive made so many mistakes yield gonna be crap for sure ! Yes it stopped spreading but it’s still there. Not sure what to do about it but it seems to still be growing anyways.

Not sure but I think a big part of this problem was caused by the stress these ladies had during their seedling stages.. (heat/dryness/low ph)

 

C

captainforest

Member

• Nov 27, 2020

• #17

Hobbes said:

Doesn't look like powdery mildew.

Click to expand...

Yea.. does it have anything to do with the led burning it?

 

Hobbes

Well-Known Member

• Nov 27, 2020

• #18

.

No, there would be more canoeing in the upper leaves from heat stress.

captainforest said:

Yes it stopped spreading but it’s still there. Not sure what to do about it but it seems to still be growing anyways.

Click to expand...

The affected leaves will never recover, so long as it's stopped spreading you'll be fine.

.

 

C

captainforest

Member

• Nov 27, 2020

• #19

Hobbes said:

.

No, there would be more canoeing in the upper leaves from heat stress.



The affected leaves will never recover, so long as it's stopped spreading you'll be fine.

.

Click to expand...

Awesome! It did stop spreading. The other plant though has this weird color pattern on her all over ... very light green but its growing well haha

 

C

captainforest

Member

• Nov 27, 2020

• #20

So i just flipped into flowering. Do you guys think i should defoliate?