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Hello, I have been growing 3 plants in a 4x4x7 grow tent and I'm running into what appears to be some sort of nutrient burn/deficiency and I'm unsure how to treat it because I'm not sure if it's nutrient burn or potassium deficiency or what. This is my first grow ever so I have absolutely no experience but I do have pretty good knowledge on the subject. I'm just looking for some help diagnosing what's going wrong with my girls. some background information they are at day 25 of flowering I'm using a 400 watt hps light as well as a vent fan and an oscillating fan. I also spray some cO2 in there every few hours not sure if it's helping but i do. Also the soil is white because the top few inches is play sand to keep fungus gnats under control. Another sidenote I started them under cfls for the first 4 weeks and due to not understanding my light timer they got a 23/1 light schedule rather than 18/6 as I intended. For nute's I'm simply following the directions of a starter kit and there's been no big change in nutes other than a slight increase in volume of watering ,not concentration of the solution. Please help this is my first major problem I don't know how to handle.

Ok so I ran into some overzealous fertilization issues, as it seems, in my ROLS soil that I refreshed in the beginning of November.

The symptoms start from the top and even though there's plenty of nitrogen (tip clawing) they started to show interveinal yellowing starting from the leaf margins. Right now some of the top leaves are crispy with rusty color.

The temp is at 25-27C, moisture at 40 or lower and pH is a stable 7

I can't even figure out which nutrient is in excess, so assistance would be much appreciated.

It's been a little over 8 weeks since I switched over to 12/12. I'm getting little yellow spots all over the fan leaves and some dark brown spots. Can anyone look at these pics and let me know what I'm dealing with?

feeblos said:

Ok so I ran into some overzealous fertilization issues, as it seems, in my ROLS soil that I refreshed in the beginning of November.

The symptoms start from the top and even though there's plenty of nitrogen (tip clawing) they started to show interveinal yellowing starting from the leaf margins. Right now some of the top leaves are crispy with rusty color.

The temp is at 25-27C, moisture at 40 or lower and pH is a stable 7

I can't even figure out which nutrient is in excess, so assistance would be much appreciated.

Click to expand...

you gave too much npk fertilizer

It's been 6 weeks into flowering. She's been great and a sturdy grow until I ran into this problem. The leaves seem to turn yellow and then get these brown/bronze areas. I'm thinking it's a combination of light burn and overwatering. Any help would be much appreciated.

Too bad the pics are gone, great thread.. someone should ressurect her

What’s going on with my plants! After a two-year break I am back to growing. What does this look like to you? Am I over feeding or do these need foliar fed cal mag or something? I’m in pro mix feeding about 550ppm 6.1 ph. 1 month old plants in one gallon containers . Only new growth is doing this on a couple plants and not all plants. I’m running all new genetics so I’m unsure . Oh yeah I’m feeding with mills nutrients

Is this normal with it`s own kind of genetics or I have a Nut problem?
I`m on my second week of Veg using Advance nutrients with recommended dosage.
PH first week avg 7.4 ppm 900
Ph this week 6.5 ppm same 900
water temp 21-22C
Humidity 45-50
DWC Hydro Mars Hydro TS1000 in a 3x3 tent.

I`ve written to Advance Nutrients and they tell me don`t worry about the PH they add aditives to allow Nutrient uptake in those PH levels.
Roots look good but there is some coloration. Next time I fill it up i`ll leave an inch gap between edge of the container and the water line.

Please update the threads pictures

dav3 said:

Please update the threads pictures

Click to expand...

Will do tomorrow, right now I’m doing a 24hr darkness transition for flower. Then add in nutrients AN micro veg and bloom, cal mag, AN big bud voodoo, xfactor, rhino, and un-sulfure molasses.
I was hoping to get my deep red led light to compliment my mars hydro TS-1000. but that did t came through. Tomorrow will have day 1

Should I remove these 2 big Fan leaves blocking all the growth underneath she was FIM but I know leaves are power source just seems like branches underneath would thrive without the blockage idk I’m using string taped to bar at top of tent to hold up the leaves to allow more light and air movement

Here you go. Please let me know if you guys see anything abnormal. Like the colour of the leaves

All photos are broken images, so unfortunately im unable to use the photos posted to compare.

I can’t see any of the photos to compare does anyone have any ideas there clones about 2 weeks old 4 days In soil

Ozymandiasza said:

It's been 6 weeks into flowering. She's been great and a sturdy grow until I ran into this problem. The leaves seem to turn yellow and then get these brown/bronze areas. I'm thinking it's a combination of light burn and overwatering. Any help would be much appreciated.

Click to expand...

I dont know parameteres of your growing but this is a lack of fertilizers - purple stems, yellow leaves... your EC?

Hey guys I got powder mildew pretty bad in late flower.... can’t take picture... what’s my best Option to do..... still have about 3 weeks left

I have this little girl here, it is 15 days old. Strain is Dark Devil auto.

I've been growing it on a windowsill up until yesterday when I introduced her to a 125w blue cfl.

Her first true set of leaves already were with light green spots. Could this be because it is a purple strain ? Or am I doing something wrong ?

Watering with no nutes, just tap water.

thanks

Grow setup:640w PCL PhotoBoost based on lm301bs and 660nm Crees
5x5 gorilla tent, ac infinity intake and exhaust fans
two mini clip fans (I have hurricanes but i need to reconfigure to mount)
~77 F and 55% RH

Q.C.S. Feminized OG Kush Seeds from Montreal Cannabis Seeds

Started in Fox Farms Light Warrior for about a week.
3" JiffyPots - Just fed un-pH'd tap water. Seemed to do ok.
Transplanted to a 1 Gallon VivoSun fabric pots.
Fox Farms Ocean Forest/Happy Frog/Light Warrior in a 2:2:1 mix

Started pHing water when I saw leaves turning downwards
I thought I was overwatering (in an air pot, I know I know..)
I was actually underwatering them I believe.
Almost killed them all by pulling back on the water (derp)
Started watering more when I read about sticking your finger in the dirt (something I'm really good at) and gauging moisture up to 1"
They seemed to be coming back to life, but were definitely yellowing and crisping up
then I transplanted to 3 Gallon, kept the watering to about once every 2 days or so
Some of them continued to grow normally
Some of them did not.
Here is all of them for comparison.
I felt as though I had Nitrogen, calcium, potassium and possibly phosphorus deficiency?

Fed for the first-time using Fox Farms Grow Big and Big Bloom (10 ml of each in a 4 gallon watering bucket, less than half the recommended dose) and pH'd to 6.5

Also, should I just kill off the nastiest looking planrs? I was planning on one last transplant to 7 gallon fabric pots (2 weeks before flipping to 12/12) and don't want to waste photons. If they can be better spent on some of the "healthier plants." Although, they all look kinda shitty. I can post more pictures if necessary.

I planned on feeding 4 weeks after 7 gallon transplant (2 weeks into flower), since the FF soil is already nutrient dense. I also read that there is a 2 week recovery period from the transplant. I want them to be healthy before I even attempting to transplant.


Obviously I'm new to this and a complete fuck up. Hahaha. I'm just trying to piece together info as I go. Open to any and all suggestions, criticism, and eventually praise.

I am kind of panicking, this is my 1st grow ever and I'm in the 2nd day of my 5th week of flower... I watered this morning and whenningot home like 9 hrs later I noticed a leaf on 1 plant with little splotches and the tips look a lil burnt. Can anyone help me out on what the issue is.