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Ckbrew
Well-known member
What are you feeding them and what is ph of nute solution going in? 6.5 is at the high limit for coco hydro. I would rule out ph problems before looking at TMV. Not sure I agree with nitrogen toxicity. That usually shows up in the leaf tips first. Also consider moving lights closer. LEDs are all different when it comes to distance. If you put the back of your hand under the light far away, then slowly raise your hand to the light you will find a distance where the heat from the light increases very rapidly for the distance moved. Find that sweet spot, 15 - 18 inches for my lights, and try your lights at just above that distance from the top of your plants. Also do a bug check.
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dilvish
New member
your water going in should be 6.5 - 7.0 PH for soil. You need to PH the water. When you add nutrients to the water the PH levels can go up or down so you need to test the PH of the water/nutrient mix before watering. PH of 8.2 is going to cause problems.
Do Not mist your plants with nutrients. Nutrients are taken up by the roots in the growing medium (Coir, soil or water/hydroponic).
Northern lights loves light so the 100cm distance was probably okay as long as the lights were on 24/7. 27 inches might be better or worse depending on the full spectrum those lights give off. the manufacturer should be able to tell you what the optimum height would be for cannabis.
Do Not mist your plants with nutrients. Nutrients are taken up by the roots in the growing medium (Coir, soil or water/hydroponic).
Northern lights loves light so the 100cm distance was probably okay as long as the lights were on 24/7. 27 inches might be better or worse depending on the full spectrum those lights give off. the manufacturer should be able to tell you what the optimum height would be for cannabis.
