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They're not thristy. The is a distict difference in a plant wilting from too much water vs. not enough. With over-watering, only the plants leaves will droop, but wth under-watering, the leaves go completely limp and so does the main stem. When you see the main stem droop at the top, that is...

Yes, that much wilting is fine. As long as it during the dark cycle (or just shortly before, and/or shortly after). Watering during the dark cycle is not necessary, and if anything cold cause problems. Just water during the light cycle, and a maximum of 3 times per day right now. When the plants...

What is the RH outside the grow room? Cause if it's a good bit lower, then more airflow is all you need.

I think that spec refers to the source water, not the output water. Not sure if that's what you meant or not, but I just wanted to clarify.

Right on. I guess I got lucky with my R/O system, with a PH of 7.0 (Source water has PH of 8.2). My assumption was that pure water would always have a neutral PH.

I catch your drift :) In my case, I may waste a starter cube or two because a seed didn't sprout or whatever, but no big deal, the cubes are a couple of cents each and I have plenty of seeds, so in my case I just plant more than I'm going to need and throw out the weaker ones. But I can see the...

Funny you mentioned that the water was "yucky". When I flushed mine for the first time after switching from recirculation to drain to waste, it was nothing but an oil slick, or at least that's what it looked like. I'm assuming it was bacteria, molds, etc. Anyway, even though I'm using a...

I throw my seeds in 1 1/2" presoaked rockwool starter cubes, and three days later I have spouts. I have tried the paper towel method and the cup of water method, and in both cases it took just as long or longer with these methods than it does to just plant the seeds like nature intended. Also...

I think the idea is that the food coloring in the kool-aid changes the color of the buds. I'm not sure if this is true, but I do believe there was an experiment done with food coloring at some point. Not sure where I read about it, but you could certainly do some searching to find out. The only...

Yeah, avoid it as best you can. No big deal if you get a few drops or so on them, but generally the RW cubes should stay as dry as possible.

Yeah, those dead flys are fungus gnats, they basically look like regular flys, but they don't actually fly very well, they tend to hop around from place to place. Anyway, they can be a real pain in the ass. I have minor issues with them every summer, once the cool fall air descends on us, they...

Is that a sticky trap I see? If you have a fungus gnat problem, that could be what is indirectly causing your plants to wilt. Fungus gnats aren't harmfull in and of themselves, but they can bring pathogens (ie. molds and fungus) into the garden. When I was running recirc drip, I had the same...

There's plenty enough fert in the soil to get you through the veg phase, so don't add any of that shultz plant food until at least a couple of weeks into flowering. The shultz with a 10-15-10 NPK, will be good for the flowering phase, as it has plenty of phosphorus. For now, just water (rain...

What is your relative humidty? What are you using for air circulation? In order to prevent powdery mildew, you have to keep these factors in check. Humidity above 60% can be a problem, and lack of air circulation will also contribute to the problem. But now that you already have the problem...

Personally, I would let them be, I would just go with plain water until the plants start to show signs of being nitrogen deficient (ie. lower leaves yellowing). The plants look otherwise healthy, so with any luck, they'll use up whatever nutes are left in the soil during the stretch phase. I...

The reason why I asked about the soil that you're using is that it may have timed released ferts in it, which may very well be the problem. It could be a root-bound problem as greencross suggested, but I would look into that soil you're using.

Yeah, Illegal smile is right. 1000 uS = 1.0 mS

Some slight droop right after watering is pretty normal in my book, that what I always observed anyway. Also, the plants usually droop somewhat during lights off as well. As far as I know, it's just part of the biology of the plant. How long do you flood for?

Your R/O machine isn't working properly then. The whole point of a R/O system is to provide you with near pure water. Pure water has a PH of 7.0. My R/O system gives me water at a PH of 7.0 and a TDS of 15ppm, and my source water is well water at a PH of 8.2 and a TDS of 120ppm. As for the PH...

No, absolutely not. Usually horticultural PH modifiers are diluted down to anywhere between 10% and 30% for two reasons, one being for ease of use, and the other for safety/shipping reasons. I've spilled PH up on my hands from time to time, it's no big deal, just wash your hands as soon as...