How do you grow hydro do i need a better system i try it befor didnt work i start it in a cup it grew but the leaf turn yellow brown thin it die so i shop grew

You want to use hydro nutrients, so find your nearest hydro shop, and see what they carry. General Hydroponics (GH) Flora 3-part is a good one.

HTH

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Well, if it was easy, everyone would do it.

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THANK YOU, POTROAST!!!! you have insured that by fall I will have more pot than I know what to do with.

Out of curiosity for later on in my grow, when should you usually change the light cycle to 12/12? what should the plants look like? And are there different reasons for switching them at different times during a grow for different results?
Full LED grow room/aeroponic system. first attemp

When you change to 12/12 depends on a few things, mainly the space you are working with. If you have a confined space you will want to switch over early while your plants are small to avoid your plants outgrowing your space while flowering. If you have a huge room you can wait until the plants grow large before switching. The bigger the plants when you change the photoperiod the more bud you will get (on average) since the larger plants can sustain larger flowers.

Lol, my room is about 7' tall. I'm using a aeroponic system that only has about 6" between the plants. I'm thinking that I may have do do some funky trimming later on in the budding stage to maximize the yield and keep them from getting all intertwined. I'll check back then when I'm sure I'll need help with the snipping. plus the clippings would be good for clones, cool.

When to switch to flowering is almost always a height consideration, but for your aero system, with plants close together, you may want to keep the plants smaller. Anything taller than 2 feet can cause problems with stability in an aero tube. You should consider support trellis, or high netting for plants to grow through.

HTH

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Hey potroast, what would you have as a ppm for plants 30 days or so old using the Flora series?? VV

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http://www.rollitup.org/grow-room-de...p-journal.html

Well, that's an easy one! Whatever the plants can take.

That said, the answer is not so cut and dried. It depends on the amount of light they're getting, and the temperature, and if you're adding CO2.

Here's a general thumb rule:

40w/sqft 800ppm
50w/sqft 1000ppm
60w/sqft 1200ppm

And that doesn't consider supplements, which may decrease the amount of basic salts that you use.

HTH

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