I never understood that either!

I've had plants burning like crazy when my nutes and "salts" were way out of hand. The bad tap water was compounding the problem. After getting ppm/EC under control the dang plants can touch the air cooled hood glass and just thrive. No signs of burning nor bleaching. Go figure.

Quote Originally Posted by Sprite
Here's the thing I don't quite understand about temperature: I read everywhere that 75 degrees or so is optimal. I also read that you can put your light real close and as long as your hand doesn't burn after a minute, your plants would be fine. So my hand can withstand temperatures way higher than 75 degrees! This seems like conflicting info--can anyone clarify?

Apologies if these seem like dumb questions. I have spent lots of time doing lots of research, but some stuff just doesn't seem to add up.
Ocotillo Reviewed by Ocotillo on . light question on newly transplanted clones Howdy pals. I have 6 AK-47 clones, newly rooted, that I just put into 1 gallon soil pots a few days ago. While rooting, the clones were under a fluorescent plant tube. After I put them in dirt, I turned on the 250 watt HPS (I know MH is better to veg, but this is what I have now) and within 2 hours, they looked floppy and stressed. My water and soil are ph 6.5, closet was at 85 degrees yesterday because of the outdoor heat and the light, but very well ventilated. I put them back to the Rating: 5