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Looking at them today you'd never know they had been damaged so badly. My tallest White Widow is now 30" tall, and exactly one month old from seed. The rest of the White Widow are around 26" tall. They're actually threatening to get too tall for the box. Seems like pretty good results for a...

The PPM of your solution is the level of dissolved salts. This obviously goes up as you add nutrients and down as the solution is diluted. So, if your nutrient solution says it should raise the PPM by say, 800 and your water has a base PPM of 200, then you'd want your meter to read 1000 after...

I'll see what I can do about the mold, then. Thanks for tipping me off. It's only a couple small patches on the cubes so far, nothing on the stems. And yeah, I've never smoked white widow before, so I'm really looking forward to harvest time. Pretty much all I can find where I am is low...

Already got flowering started, but unfortunately I only have the one box. I was planning to build a second box in a few weeks when I'm not quite so broke.

So, now I have a new problem. I have 3 monstrous White Widows. I mean, they're twice as tall as the smallest plants. I love how vigorously they're growing, but the adjacent plants are not. My plants are spaced 6" on center, which I decided on assuming that they'd grow at about the same rate...

I just built a box for about 350 pounds including cost to buy all tools. The box is 5'x5'x2' with an aeroponics setup and separate compartments for drying and electronics. My lighting is a 400 watt electronic ballast which supports HPS and MH lamps (cost about 60 pounds shipped, got a nice...

Got back into town yesterday, and my ladies are doing beautifully. My biggest plant was putting on about 2 inches of growth a day, and I put them into 12/12 as soon as I got back. Here are some updated pictures, the plants are 26 days from seed. There's a pretty big difference in height...

Ok, so I've been flushing for three days. I absolutely have to leave town tomorrow and won't be back until Sunday, but I have somebody staying at my place to take care of the plants. The plants are looking much better, and I've been watching them closely and there doesn't seem to be any new...

I'd be shocked if there was a commercial off the shelf solution for that. Building your own is certainly possible, but if you had the skill to do something like have your own PCBs fabricated or use a programmable board, you probably wouldn't be asking that question.

Thanks for the quick reply. I'll give them a few more days of plain water and keep an eye on them. If I can snag a friend's camera I'll post some pictures.

And my reservoir ran dry. Luckily the pump didn't burn out, but the fluctuations in water levels seems to have caused the nutrient solution to become much more concentrated as the plants absorbed the water. As a result, I've got some pretty extensive nutrient burn. A few plants are showing it...

So, my friends and I decided to start growing recently. Problem is, we all live in small apartments. So, we decided to design and build a box from the ground up with everything we need integrated into it, and design it so it looks like a large cabinet. We also settled on using aeroponics...