What I want to do or know
I'd like to try to build the plant based air purifier and I have a pum...
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I did see one on Amazon the other day and it was more like a mesh bag so it might even let roots go through it. I'm not sure it would do anything specific for particles though.
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@nshapiro also pointed out that it would be easier to break your pump by flooding it if you used it in the usual "push" mode. Just so I understand, is that a consideration /against/ modifying the pump?