Still having loads of trouble with light burn / stressed out plants. Leaves pointing up, turning yellowish. Lights are now even at 80cm above plants, can hardly go any higher. I'm surprised, because the Hans Panel 180w is used at 30cm in numerous grow reports online with no issues. Must be the combination thats too much. 420 watts in a grow tent, and leaves are burning alive. If that ain't proof that LED's can't 'outperform' HPS ;)
Does anyone have tips & tricks for making my plants healthy? It feels just silly to remove a light and continue with only 180 or 240 watts total.. Should I use CO2 tabs or something? Do they actually work at this point? Questions questions.
A lot of good information here. You are high with your lighting levels though and too close with your fixture. Aim for about 100 umol. in veg. until they are ready to take some more when you have a full canopy. ie. the leaves are tending to reaching for the light, not drooping. Good luck with your grow. You are off to a nice start.
@Mr_Positivo, "this problem shows you what was happening in your garden back then" this is a very good point, I removed 2 plants from the room couple weeks ago and they too showed signs, so I wondered how that was possible. Here's my answer :)
@GeorgeMaas, No problem. These leaves are weeks old so this problem shows you what was happening in your garden back then. You may have fixed it by now. Monitor closely the new growth along with the condition of the existing leaves showing symptoms. Hold plants up to light, back lighting the leaves will show you tips and stripes in its early stages. Leaf color should be perfectly even.
cheers and good luck, bud.
Hey GM, If your leaves were suffering from too much light they would not be reaching they way they are. They look absolutely beautiful and vigorous so clearly something about what you are doing is on point. Take a closer look at your nute regime or soil make up to find the source of your problem. Check your ppm's. If I was growing in coco, I would be in the 450 range. Hope this helps. Cheers.
@GeorgeMaas, leaves that have been exposed to too much light look a lot like leaves that have been overwatered. Its not always easy to tell from the outside. The leaves droop but also they curl under like a taco and narrow down in their profile and they miniaturize. I don't think you have any of these problems.
Most growers will tell you plants with leaves praying is the state you want your plant to be in. Keep up the good work.
@Mr_Positivo, thanks for the reassurement :) I read that leaves can also turn heavily upwards when there’s too much light (to minimize the light surface) I might just started a bit too late with feeding the plants while in vegging. With the minimal amount of heat I have, it probably also means the plants are watered less because of less evapouration, which also means less nutrients. Next grow I’ll start feeding in an earlier state. I can see a big difference in the amount of buds thats developing between the healthy and less healthy plants (will upload photos tonight) thanks again :)