Deficiency or burn?
- Thread starter Jboy19
- Start date
Couch_Lock
Well-Known Member
Nutrient Knowledge: Marijuana Plant Nutrient Deficiency & Excess Chart
Nutrient deficiency & excess chart. A common problem with growing cannabis for yourself is knowing how to diagnose what may be going wrong with your plants.
www.loudclouds.co
Couch_Lock
Well-Known Member
Ive never had bugs so far in my indoor grows, Im thinking some kind of infestation. I'm really not sure.
TheSadVeryBadMadGrower
Well-Known Member
Honestly, looks like severe potassium def.....and I mean severe.
TheSadVeryBadMadGrower
Well-Known Member
How far away are your lights?
Thanks guys,
light are about 10 inches up, temps are 24 - 27 degrees.
I emptied tanks 3 days ago and filled with fresh water to give them a flush, pulled all burnt leafs off, but then I saw more burn and damaged leafs today, so I have added 3/4 of a pint of canna A&B in
cheers!
J
light are about 10 inches up, temps are 24 - 27 degrees.
I emptied tanks 3 days ago and filled with fresh water to give them a flush, pulled all burnt leafs off, but then I saw more burn and damaged leafs today, so I have added 3/4 of a pint of canna A&B in
cheers!
J
TheSadVeryBadMadGrower
Well-Known Member
What kind light? 10 inches a little close.
2 x 600w
TheSadVeryBadMadGrower
Well-Known Member
I am assuming HPS. 10 inches I believe is far to close for those lights.
2WorldsFrog
Well-Known Member
a good guide: for mh/hps
| Grow Light | Closest | ~ Sunlight | Furthest |
| 150W | 8″ (20cm) | 10″ (25cm) | 12″ (30cm) |
| 250W | 10″ (25cm) | 12″ (30cm) | 14″ (35cm) |
| 400W | 12″ (30cm) | 14″ (35cm) | 19″ (48cm) |
| 600W | 14″ (35cm) | 16″ (41cm) | 25″ (64cm) |
| 1000W | 16″ (41cm) | 22″ (55cm) | 31″ (79cm) |
ive has them like this for years, I’ve got quite a heat resilient strain, it’s defo not a heat stress problem
actually saying that it’s more 15/20 inches not 10
2WorldsFrog
Well-Known Member
what are you growing in?
NTF kit with drippers
2WorldsFrog
Well-Known Member
I've never grown that way, but I did have a couple gg4 in an rdwc do that same thing or close at about the same time of flower before. I too thought potassium deficiency but was unable to correct before harvest. Ultimately I think a cal deficiency is where the problem started.
The bud wasn't really affected, appearance wise at least, still great smoke.
Yer it’s definitely a lot trickier growing this way, suppose I like the idea of not having to feed every 2/3 days lol
kind of why I use minimal nutes as hard to fix if things start going wrong. Hopefully mine don’t spread to the Bud either they a 10 week flower so hopefully they’ll see it through
thanks for your help! Great forum
70's natureboy
Well-Known Member
It doesn't sound like your mix is too strong. What does your EC come out to?