EmanonGrows
- 11
- 3
Hello farmers. I have been trying to get on top of whatever is happening to my plants. I'm a noob still, as this is only my 2nd serious cannabis grow. I've grown crappy closet plants before, and I grow lots of chile peppers and hops and other non-THC crops outdoors. I think it could be P lockout, but I'm just not sure what to do here to determine for sure.
Stats:
4 plants
4x4x7 tent
3x 450W Meizhi LED, ~10" from tops
Temp is 79 day/66 night, 18/6 schedule
*about 9 degrees cooler night temps than my summer grow, which did not have this issue*
Humidity about 45% all the time, drops to 35% with lights on
Plants are clones, 2 weeks after rooting they were transplanted into bigger pots and moved from my mother tent to the 4x4x7 tent (where I veg rooted clones for a month-ish and then flower)
Water pH ~6.8-7.0, runoff pH about 6.8, slurry pH the same
*this seemed concerning to me, but my last grow the pH was just about the same in the same soil and I did not have this problem*
Fox Farms Happy Frog soil in 5 gallon cloth pots
Essentially no nutes. I fed them lightly once at 3 weeks into veg, but since have just been RO water only. I'm afraid to feed them again, in case what i have is lockout and not just deficient soil. I'm using Roots organics ferts, following their instructions but at reduced strength.
No bugs.
One oscillating tower fan blowing on the plants.
Symptoms:
My plants are growing slowly, leaves looking kind of drooped, and the main thing is a dramatic purpling/pink color and spotty necrosis of the fan leaves, moving from bottom to top. This started immediately after i transplanted them into the FFHF soil. My suspicion is maybe i have too high of a pH, or my nighttime temps are getting too low, and P is becoming unavailable. I have four plants of two different strains and they are all showing the same behavior, leading me to think it's environmental (same tent, same bag of soil, same nutes). Currently, the higher up leaves are developing pink edges/margins and a pale yellow/green new growth. While some bigger fans just turn straight dark purple, some look very metallic. Others show brownish/dark spots.
^can see some pink edges on that leaf in the middle-right
^hard to see, but this leaf is almost completely purple
^ even with LED, pink tips can be seen on the leaf i am touching here
They had what seemed like a teeny growth spurt when i fed them, leaves flattened out, but within hours thereafter they got droopy again, and then within a day the purpling started progressing again. This made me wonder of they wanted some food, but i don't want to throw ferts at them until i know it's what they need. The last grow I used the same soil (a different bag!) and those plants grew incredibly well; they didn't need food until about a week into flower. I read FFHF can be varied in its richness so there's that, too.
Anyway.. I'm frustrated that I can't diagnose this myself... I don't know if they're locked out or hungry or what, but it's really messing with my 'schedule', and I don't want to flip lights til I get it worked out. Any help would be much appreciated!!
I tried my best to get pics in natural light, but apparently i have a dim house with cheap, dim bulbs lol. I tried to get some pictures under the LEDs with a filter but it still looks purple and stripey. I have since given these girls haircuts/defoliated the lower parts to encourage airflow.
Stats:
4 plants
4x4x7 tent
3x 450W Meizhi LED, ~10" from tops
Temp is 79 day/66 night, 18/6 schedule
*about 9 degrees cooler night temps than my summer grow, which did not have this issue*
Humidity about 45% all the time, drops to 35% with lights on
Plants are clones, 2 weeks after rooting they were transplanted into bigger pots and moved from my mother tent to the 4x4x7 tent (where I veg rooted clones for a month-ish and then flower)
Water pH ~6.8-7.0, runoff pH about 6.8, slurry pH the same
*this seemed concerning to me, but my last grow the pH was just about the same in the same soil and I did not have this problem*
Fox Farms Happy Frog soil in 5 gallon cloth pots
Essentially no nutes. I fed them lightly once at 3 weeks into veg, but since have just been RO water only. I'm afraid to feed them again, in case what i have is lockout and not just deficient soil. I'm using Roots organics ferts, following their instructions but at reduced strength.
No bugs.
One oscillating tower fan blowing on the plants.
Symptoms:
My plants are growing slowly, leaves looking kind of drooped, and the main thing is a dramatic purpling/pink color and spotty necrosis of the fan leaves, moving from bottom to top. This started immediately after i transplanted them into the FFHF soil. My suspicion is maybe i have too high of a pH, or my nighttime temps are getting too low, and P is becoming unavailable. I have four plants of two different strains and they are all showing the same behavior, leading me to think it's environmental (same tent, same bag of soil, same nutes). Currently, the higher up leaves are developing pink edges/margins and a pale yellow/green new growth. While some bigger fans just turn straight dark purple, some look very metallic. Others show brownish/dark spots.
^can see some pink edges on that leaf in the middle-right
^hard to see, but this leaf is almost completely purple
^ even with LED, pink tips can be seen on the leaf i am touching here
They had what seemed like a teeny growth spurt when i fed them, leaves flattened out, but within hours thereafter they got droopy again, and then within a day the purpling started progressing again. This made me wonder of they wanted some food, but i don't want to throw ferts at them until i know it's what they need. The last grow I used the same soil (a different bag!) and those plants grew incredibly well; they didn't need food until about a week into flower. I read FFHF can be varied in its richness so there's that, too.
Anyway.. I'm frustrated that I can't diagnose this myself... I don't know if they're locked out or hungry or what, but it's really messing with my 'schedule', and I don't want to flip lights til I get it worked out. Any help would be much appreciated!!
I tried my best to get pics in natural light, but apparently i have a dim house with cheap, dim bulbs lol. I tried to get some pictures under the LEDs with a filter but it still looks purple and stripey. I have since given these girls haircuts/defoliated the lower parts to encourage airflow.
