Custom45
- 89
- 18
ec 3 in my opinion is way to high . i would be more like at 1.4ecThanks for reply, no, edges and not burnt or curled up. Light is 350mm from top of plants, does need to come up a bit, but max I can take it is another 50mm at most. I read that potassium deficiency can caused plants to stretch a bit, so I think they're taller than they should be.
I'm using ppm meter, reading about 1500ppm, or EC of 3. I know thats quite high, but with the previous deficiencies I thought I needed to bump nutes a bit. Used calmag a few times earlier in flowering, but not recently. I thought overfeeding nutrients was tips and edges burning, not middles of leaves like I have? Shold I try and dial down the A+B and add a little calmag instead?
Thanks. Could this be causing the brown patches on upper leaves? Not showing any other sign of nute burn, like burnt tips etc.ec 3 in my opinion is way to high . i would be more like at 1.4ec
Those pictures reminded me of what my plants looked like in the early 90s where weed was a big nono to grow, you go to the pen for growing then, I took the risk then to know what I need to know now, it was having the lights too low on my plants back then, I learned horticulture from tech school. if you really want to get better at growing takes A LOT OF READING & DETERMINATION, I spent countless nights reading Ed's Rosenthal's books, you can't get better at growing by asking questions to solve your problems, I learned by reading & recognizing an issue & know before it gets too badHi all,
Growing a few plants in coco coir, feeding Canna nutes (in week 4.. feeding per 10 litre: 45ml A+B, 25ml Cannazyme, 15ml pk 13/14, 40ml Boost accel, and adding a little TNC Bactorr s13). Temps with lights on 25°c, lights off 20°c. Humidity around 45-55%. Had some browning on leaves and wanted a second opinion on cause. I think it may be light burn.
I'm feeding every other day, each plant is taking about 3 litres. In week 4 of flowering so using pk 13/14. Previously had what I think was potassium deficiency (brown leaf edges and some yellowing) so I started adding a small amount (.3ml per litre) of pk 13/14 in week 2, that seems to have gone away. Also had what seemed to be either nitrogen or manganese deficiency.. lower leaves were yellowing and turning brown. I've been pHing water to around 6.0-6.2, however I checked run off and it came out around 6.3, I read plants take up manganese at slightly lower pH, so lowered to around 5.6 for last few feeds, that seems to have helped, can't see any more leaves turning yellow.
However I've now noticed the brown patches on some top fan leaves. A couple of leaves at first, then a few more, and now even more. It appears to be spreading. Light is a 300w Lumatek Attis led, approx 350mm from plants. Was at 100%, turned down to 80% but problem still getting worse. Think it's too close to the plants. I can raise it, but only by 50mm or so. Is this a light problem and if so whats best course of action? Lower to 60%? I'm worried buds and leaves on plants edges won't then get enough light.
Another thing, I could be wrong, but I'm sure buds have slowed development since I noticed this.
The brown patches look a little yellow in the pictures, but they are browner in real life....
View attachment 1194468View attachment 1194469
View attachment 1194470View attachment 1194471
View attachment 1194472View attachment 1194473
These aren't pollen sacs are they??
View attachment 1194474
Which is exactly what coco does coincidently.wait a sec....soft water...hmmm
It could it be the SODIUM that your water softener is exchanging your Ca Mg for!!!
It wouldn’t change the fact that coco breaks down and pulls the calcium and magnesium to fill the sites.So could simply removing the softener solve the problem lol? =P
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?