happynoodleboy
Member
Here's where I'm coming from; last batch of plants I harvested had problems with nutrient burn. I was using 30 to 40% strength GH flora series.
![DSC03037.jpg](/data/attachments/1849/1849652-37ac874329ea07bc21fbc6e9c4f2202a.jpg)
The first symptoms I noticed before they got bad was curling, browning tips. I'm now running 20% and the leaf tips are just starting to curl.
![Leaf Curl 04.jpg](/data/attachments/1849/1849653-5d2c73fc6cedee82ab8c1ad8b9014ffb.jpg)
![Leaf Curl 05.jpg](/data/attachments/1849/1849654-19c8bb08bee6c6988b4194fc874a0553.jpg)
Today I put water with no nutrients into my DWC bubbler. I am trying to keep my ph around 5.8 - 6.0. I'm using a TDS pen to monitor my PPM. The tap water has around 200 PPM and I have been adding around 300 PPM with the nutrients. I used this great post as a guide line and figured I was way below the concentration to burn --> https://www.rollitup.org/newbie-central/937-how-grow-marijuana.html#post4677
Am I not understanding TDS and nutrient concentration correctly or maybe my plant is just sensitive? The environment is warm at 22C (71F), with constant air circulation. Anyway, I appreciate any helpful input, thanks!
![DSC03055.jpg](/data/attachments/1849/1849668-a65ce579cf3f09ed3141d8669ad3b95f.jpg)
![DSC03037.jpg](/data/attachments/1849/1849652-37ac874329ea07bc21fbc6e9c4f2202a.jpg)
The first symptoms I noticed before they got bad was curling, browning tips. I'm now running 20% and the leaf tips are just starting to curl.
![Leaf Curl 04.jpg](/data/attachments/1849/1849653-5d2c73fc6cedee82ab8c1ad8b9014ffb.jpg)
![Leaf Curl 05.jpg](/data/attachments/1849/1849654-19c8bb08bee6c6988b4194fc874a0553.jpg)
Today I put water with no nutrients into my DWC bubbler. I am trying to keep my ph around 5.8 - 6.0. I'm using a TDS pen to monitor my PPM. The tap water has around 200 PPM and I have been adding around 300 PPM with the nutrients. I used this great post as a guide line and figured I was way below the concentration to burn --> https://www.rollitup.org/newbie-central/937-how-grow-marijuana.html#post4677
Am I not understanding TDS and nutrient concentration correctly or maybe my plant is just sensitive? The environment is warm at 22C (71F), with constant air circulation. Anyway, I appreciate any helpful input, thanks!
![DSC03055.jpg](/data/attachments/1849/1849668-a65ce579cf3f09ed3141d8669ad3b95f.jpg)