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oxygen saturation in water butts
On 05/07/2015 13:37, Chris Hogg wrote:
On 5 Jul 2015 11:02:17 GMT, Emery Davis wrote: Was wondering about this as I watched a very welcome rain shower this morning, but couldn't find much information. Hoping one of our resident chemists might know something about it. We all know that root oxygenation is super important for our plants and in pots can be difficult if soil becomes compacted and/or water logged. One remedy I've found is using hydrogen peroxide to super-saturate water for pots, where the plants seem to really appreciate it. Watching the rain I imagined that rainfall has a high dissolved oxygen saturation point. But then I wondered, since raindrops form at fairly high altitudes, maybe this is not so? But anyway rolling across the roof and down a pipe should oxygenate the rainwater, so that upon filling the water butt should have healthy saturation levels. After sitting around for a month though, perhaps not... it does get a bit of a stink to it. Would this water be essentially anoxic and so problematic to water with? Or does pouring it into buckets and shaking it around oxygenate sufficiently? Enquiring minds, and all that... TIA for any insights. -E I've never come across the use of hydrogen peroxide (H2O2) for watering pot-plants. What strength do you use? I imagine it would have to be really quite dilute to void damaging the finer roots; H2O2 is a powerful oxidising agent, after all. As to rain, I think regardless of how high up the droplets form, by the time they reach the ground they will be saturated with oxygen. But in a water butt there's a lot of sludge and organic detritus that gets washed in over time, which will absorb that oxygen, and the limited open surface and lack of agitation will slow the rate of dissolution of fresh oxygen. How long that water takes to recover after it's been tapped off from the butt, I don't know, but I would think it would take more than just pouring it between buckets a couple of times. These really are 'how long is a piece of string' questions. Why not rig up a solar-powered fish-tank bubbler in your butt, to keep it fresh? Sounds painful. |
#2
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oxygen saturation in water butts
On Sun, 05 Jul 2015 15:13:42 +0100, David Hill wrote:
Sounds painful. Amazing, I didn't even get it... :/ -- Gardening in Lower Normandy |
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