I've only grown hydro. I chose hydro because it seemed to me that it would be a lot easier to control. Soil seems really dirty to me. I grow indoors, so I don't want a bunch of "dirt" in here! Of course, outdoors, I would choose to grow in soil.
It seems that people who grow in soil SWEAR by it. Has there been any experiments that have grown soil and hydro using climate and light as control factors?
If you could do a soil grow and a hydro grow at the same time, using the same type of light and the temperature and humidity was the same...etc, it would be interesting to see what the difference would be.
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