I have been actively looking for some scientific information in regards to hydro growing for quite awhile, and I finally found it... thus I am going to share it here perhaps NebulaHaze will find this useful as well and put it some place for others to find as well. I will post the link to where I got this following information at the bottom of it... I have been seriously looking for the O2 saturation level and the time needed for complete water recirculation in hydro a very long time, as well as can you inject pure O2 into the water instead of air.
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“There are communities of beneficial microorganisms that become established in the pond water that naturally suppress root diseases,” he said. “Even with the establishment of the beneficial microbes, growers need to maintain the dissolved oxygen level to near saturation (about 8 parts per million O2 at room temperature) in the pond water to keep the plant roots and beneficial microbes actively growing.
“Growers can bubble in air or can inject pure oxygen into the water. It is also important to circulate the pond water so there is a uniform gradient related to temperature, pH, fertilizer and oxygen.”
Mattson said the Cornell University Controlled Environment Agriculture group found good plant performance in a 1,500-square-foot pond where water was recirculated and distributed through manifolds in the pond. Pumping capacity achieved a complete water recirculation exchange every 12 hours.
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http://urbanagnews.com/blog/monitori...ction-systems/
I can't believe it he actually explains why the bio-film occurs in hydro when you use organic nutrients and explains why in turn it gave me a ton of root issues because I tried it at one point. A worthy piece of information for the hydro growers, and I hope others get as much from it as I did.
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“There are communities of beneficial microorganisms that become established in the pond water that naturally suppress root diseases,” he said. “Even with the establishment of the beneficial microbes, growers need to maintain the dissolved oxygen level to near saturation (about 8 parts per million O2 at room temperature) in the pond water to keep the plant roots and beneficial microbes actively growing.
“Growers can bubble in air or can inject pure oxygen into the water. It is also important to circulate the pond water so there is a uniform gradient related to temperature, pH, fertilizer and oxygen.”
Mattson said the Cornell University Controlled Environment Agriculture group found good plant performance in a 1,500-square-foot pond where water was recirculated and distributed through manifolds in the pond. Pumping capacity achieved a complete water recirculation exchange every 12 hours.
----------
http://urbanagnews.com/blog/monitori...ction-systems/
I can't believe it he actually explains why the bio-film occurs in hydro when you use organic nutrients and explains why in turn it gave me a ton of root issues because I tried it at one point. A worthy piece of information for the hydro growers, and I hope others get as much from it as I did.
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