Hey guys, overnight some leaves have decided to do some massive twisting and some are pointed straight up. I am not 100% sure about what problem is causing this. The dark spots and curling seems indicative of a phos def. However I've also read nutrient lock outs/burns can cause twisting leaves. Heat could cause leaves to curl up, but my temps have never exceeded 73* so I don't believe that is the culprit. I have not seen this issue before with clones and the light I am using so I don't think it could be light burn either.
I have half blueberry(sativa), half true og kush(indaica dom) not sure the exact %.
8 plants in total
veg week 1 (6 days after I transplanted clones into the tote)
indoor, hydro grow
res size is capable of 55gals, holds 12gals on average
res temp is 68-70*
I am using rapidrooters and hydroton as a medium
I am using low pressure aeroponics (sprayers)
1 600w LED
temps have been stable at 73*
RH is 30-35%
PH has been between 6.4 and 6.1
ppm has been a little high around 480, GH sched says I shuold keep it below 400 for week 1.
no pests,
watering cycle -> 15 seconds on, 25 minutes off.
nutes are GH flora series veg week 1 + hydroguard +great white + z7. I use half strength.
4ft grow tent.
Here are some pics of the problem. it is affecting 2 of my plants most heavily, but other plants leaves are slightly twisty in one or two places.
I made some changes to the grow set up yesterday (the day before this happened). I adjusted my spray timer from 20min off to 25 minutes off (15 seconds on both times). I did this because I am worried about overwatering the hydroton in the netpot and creating an environment for root rot in the hydroton, but perhaps this is a silly fear. I lost my last grow to root rot, I think mainly because of improper sterilization, but also perhaps because my rapid root insert was practically at the bottom of the netpot, which made it get super waterlogged. I now may be going overboard with the infrequency of the spray timing, as my rapid root inserts are much higher and drier now. With that said, roots still appear/feel wet today, netpots absolutely have water still, they drip quite a bit when it take them out tilt it slightly.
In addition I added a humidifer to the room yesterday. The humidity didn't go passed 32% while I was checking on it, but I believe it may have gotten as high as 69% according to my hygrometer during the night, but I am not sure about this, it has given me strange readings before. When I checked today, the humidity was 32% again. maybe the humidity increases at night because it can't dry up as quick witht he light turned off. Not sure if this could cause an issue or not.
My best bet is this is a phos deficiency, because of the dry feel of the leaves affected and the slight dark spots that are on the affected leaves, but I wanted to ask here for second opinions! I will be flushing out the system and replacing the nutes (half strength) tomorrow morning at the latest. However if I see some feedback indicating this is due to a nute burn, I will likely use 25-33% nute strength.
Thanks for your time and feedback!
I have half blueberry(sativa), half true og kush(indaica dom) not sure the exact %.
8 plants in total
veg week 1 (6 days after I transplanted clones into the tote)
indoor, hydro grow
res size is capable of 55gals, holds 12gals on average
res temp is 68-70*
I am using rapidrooters and hydroton as a medium
I am using low pressure aeroponics (sprayers)
1 600w LED
temps have been stable at 73*
RH is 30-35%
PH has been between 6.4 and 6.1
ppm has been a little high around 480, GH sched says I shuold keep it below 400 for week 1.
no pests,
watering cycle -> 15 seconds on, 25 minutes off.
nutes are GH flora series veg week 1 + hydroguard +great white + z7. I use half strength.
4ft grow tent.
Here are some pics of the problem. it is affecting 2 of my plants most heavily, but other plants leaves are slightly twisty in one or two places.
I made some changes to the grow set up yesterday (the day before this happened). I adjusted my spray timer from 20min off to 25 minutes off (15 seconds on both times). I did this because I am worried about overwatering the hydroton in the netpot and creating an environment for root rot in the hydroton, but perhaps this is a silly fear. I lost my last grow to root rot, I think mainly because of improper sterilization, but also perhaps because my rapid root insert was practically at the bottom of the netpot, which made it get super waterlogged. I now may be going overboard with the infrequency of the spray timing, as my rapid root inserts are much higher and drier now. With that said, roots still appear/feel wet today, netpots absolutely have water still, they drip quite a bit when it take them out tilt it slightly.
In addition I added a humidifer to the room yesterday. The humidity didn't go passed 32% while I was checking on it, but I believe it may have gotten as high as 69% according to my hygrometer during the night, but I am not sure about this, it has given me strange readings before. When I checked today, the humidity was 32% again. maybe the humidity increases at night because it can't dry up as quick witht he light turned off. Not sure if this could cause an issue or not.
My best bet is this is a phos deficiency, because of the dry feel of the leaves affected and the slight dark spots that are on the affected leaves, but I wanted to ask here for second opinions! I will be flushing out the system and replacing the nutes (half strength) tomorrow morning at the latest. However if I see some feedback indicating this is due to a nute burn, I will likely use 25-33% nute strength.
Thanks for your time and feedback!