Mutated leaves under LED lights?

F

FunkyBeaver

Active Member
Hi guys,

I posted this over in the indoor LED section. I've got some more pictures and a couple responses back so far when it was suggested I ping the good doctors over in the medical ward :)

So the thingy is, I'm using these custom LED lights that are far away better suited for a saltwater coral aquarium then they are pot. I had some autoflower seeds gifted to me so I said what the hell and started a grow. Everything went smoothly up until the last couple weeks when these leaves started to wrinkle, then mutate severely in some cases.

Most plants are a couple weeks into flower. They're all under blue and white LED's. Some plants are showing more of an issue then others. They're in soil, composted h-poo based - good ol' farm shit dirt!. PH has checked out okay. I water 2-3 times a week, I have a moisture meter and I wait for it to get <1 on a 1-4 scale.

Since the original post in the LED subforum I've raise the lights, taken away half the blue LED's and added red's in it's place. It's only been a couple days so no significant change yet.

Here's some pics, anyone got any ideas???


 
D

~Dankster~420

Well-Known Member
I grow under LED (800 watt) & HPS (600 watts) + a few 300 watt CFL'S myself & hadn't seen an issue like this caused by lights.. Are all the leaves starting to do this? Or is it just the tops? :??:





FunkyBeaver said:
Hi guys,

I posted this over in the indoor LED section. I've got some more pictures and a couple responses back so far when it was suggested I ping the good doctors over in the medical ward :)

So the thingy is, I'm using these custom LED lights that are far away better suited for a saltwater coral aquarium then they are pot. I had some autoflower seeds gifted to me so I said what the hell and started a grow. Everything went smoothly up until the last couple weeks when these leaves started to wrinkle, then mutate severely in some cases.

Most plants are a couple weeks into flower. They're all under blue and white LED's. Some plants are showing more of an issue then others. They're in soil, composted h-poo based - good ol' farm shit dirt!. PH has checked out okay. I water 2-3 times a week, I have a moisture meter and I wait for it to get <1 on a 1-4 scale.

Since the original post in the LED subforum I've raise the lights, taken away half the blue LED's and added red's in it's place. It's only been a couple days so no significant change yet.

Here's some pics, anyone got any ideas???


Click to expand...
 
F

FunkyBeaver

Active Member
I know this is old, but I wanted to come full circle on it.

It wasn't the LEDs causing the mutation, it was something in the soil. I checked the N,P,K levels along w/ Ph and kept a moisture meter around to ensure consistent wattering and nutrients. Everything was in spec and stayed pretty consistent.

I know it was the soil because this mutation hit some of my hops and some tomato plants we had outdoors. The hops that had broke through the buckets and established themselves in the ground showed minimal or no mutations. The Tomatoes only had one plant all fucked up, the one in the bucket filled w/ dirt from the same pile. The plants less then 3 feet away in the ground showed no signs of mutation and performed great.

The soil was heavily composted horse manure. It had many moons to be rained on and leached and broken down. The pile was turned every week to couple of weeks. Whatever is in there effects lots of plants it seems.

The LEDs still have hope!
 
ficklejester

ficklejester

Well-Known Member
Mutation? As in they no longer look like cannabis plants? Have you since changed lights to something appropriate for plants?
 
AirAnt

AirAnt

Well-Known Member
i want to buy one of those aquarium leds for veg. cheaper than grow LEDs and the exact same specs.
 
ficklejester

ficklejester

Well-Known Member
The specs on that light show mostly white LEDs. Plants' most critical wavelength requirements for growth and flowering are blue and red. So the most efficient use of power and the potential for growth will come from using LEDs that emit light in the PAR range of 400-700.

PAR Curve.png
 
AirAnt

AirAnt

Well-Known Member
ficklejester said:
The specs on that light show mostly white LEDs. Plants' most critical wavelength requirements for growth and flowering are blue and red. So the most efficient use of power and the potential for growth will come from using LEDs that emit light in the PAR range of 400-700.

View attachment 3222332
Click to expand...
yes but mj plants use way more blue in veg and red in flower. LEDs are designed to be all-in-one lights which means they're primarily suited for flowering = most LEDs are primarily red.

certain LED manufacturers make veg-specific grow lamps that use only blues and whites but they sell for an assload, like $250 or more at least. So buying an aquarium light with a lot of whites and blues to use specifically for veg is more efficient.

One of the grow channels I sub to on the 'Tube says the veg LEDs work the best..
 
You must log in or register to reply here.
Top