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200 psi and a windmill.commercial 200psi air compressors running on 5hp electric motors are readily available. That's how much pressure you need to blow bubbles 400 feet down. Connect it to a windmill instead of a motor and there it is. Build a thousand of them and the tragedy of the commons of the gulf coast hypoxic zone turns into a blessing of additional nutrients fertilizing the great shrimp farm. Things like rigging compressors from discarded car motors -- even though there is an australian company that sells kits -- why bother when it could be a simple government contract. The solutions discussed by the talkers seem unworkable. Reducing fertilizer use in the entire Mississippi basin is not going to work, although it may succeed in creating yet another huge bureaucracy. vertical axis windmill technology is over a thousand years old.
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text orignially entered 2008-08-26 - 3:32 p.m.