I am doing my first grow and could use some tips! Plants are at the end of veg, 18 hour cycle, temp 62-78F, humidity 30-70% Soil/coco mix, pH is 6.5 I wait for the soil to completely dry out before watering (3-4 days) I have been keeping the ppm around 1500-1800 mostly. I thought I was blocking K uptake by giving too much N so I cut the nutrients in half on my last feeding to see effect (700ppm). Now one of my plants is showing a hard down curl (see pics) Everything i've read has said this would be N tox or over watering but neither quite make sense to me. What do you guys think? Deficiency? Thanks for any help or suggestions! Much appreciated http://s31.postimg.org/6vsfa4lff/IMG_0436.jpg http://s31.postimg.org/jpqh3gyuz/IMG_0437.jpg http://s31.postimg.org/jtkajq4cb/IMG_0438.jpg http://s31.postimg.org/gwx9jfyij/IMG_0439.jpg
I too am a beginner, but just from looking around on the web it sounds like it could be N tox. Here's a handy little chart I found in a post on icmag: Seedlings, Early Sprouts.........100 ppm to 250 ppm--------0.2 ec - 0.5 ec Early Vegging....................... ...300 ppm to 400 ppm--------0.6 ec - 0.8 ec Full Vegetation.................... ....450 ppm to 700 ppm--------0.9 ec - 1.4 ec Early Blooming...................... ...750 ppm to 950 ppm--------1.5 ec - 1.9 ec Full Mature Blooms..................1000 ppm to 1600 ppm------2.0 ec - 3.2 ec Were you feeding at 1500-1800 ppm throughout the entire veg? If you just upped it that much recently, the curl could be a delayed N tox reaction. If so then now that you've lowered the nutrients they might perk up again. But if your ppm have always been that high, then I'm not sure what would be going on.
if your other plants are OK then don't change everything just for one. you have some tip burn so look into that for that plant. like people plants are not all alike even if they are the same strain some feed heavy some lite.Don't let the top surface soil dry out or you will kill the feeder roots if you have good drainage you should be watering every other day and you don't have to float them another thing to watch is water running down the inside edge of the pot pre moisten the surface with a spray bottle before you water then if goes right in.
Hi. As water head said if just one plant then deal wi that individually. It does sound way too may nutes but if ya other plants not getting burnt tips then keep heavy feed. I normally do a max of 1200 ppm at this stage but all plants are different .. im on jackherer at min and loving it( fingers crossed it stays this waY) . Hope all goes well and gud luck babe xxx
Thanks for all the suggestions. The reason I have been waiting until they dry out is because I was previously having problems with watering them too often and was stopping fresh oxygen from being uptaken. I will find an in between. Havent been able to get great drainage, not sure why yet.
Thanks for the chart. I have been feeding them with high ppm for a while now. But I think I have been over feeding a bit - would explain some tip burn I've had all around. I was going off of a different chart which was much higher. Gonna keep them at a lower dose for now and see if they level out.
Thanks for the chart. I have been feeding them with high ppm for a while now. But I think I have been over feeding a bit - would explain some tip burn I've had all around.