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Adding CO2 for greater growth?
I am germiminating Alnus seeds and growing them up under lights and I
want to grow them as big as possible as quick as possible to graft them onto "adult" trees this spring to produce catkins and fruits next year. I am growing them on compost, under "Eco-Light Grow" lights (as supplied by one of those indoor growing shops which not-quite supplies the indoor cannabis industry). Indoors, this keeps them at 23°C, just right. But, it's text-book stuff: Growing plants need CO2, carbon dioxide. Would it increase their growth to provide more CO2? How might this be done? The most obvious thing to do is to use a CO2 cylinder, feeding the CO2 through a regulating valve. Is suitable equipment available at reasonable cost? The next most obvious thing to do is to go back to school chemistry and use Kipp's apparatus, that involves limestone, not a problem, and acid, which might be a problem. The next easiest source of supply is a flame. Not a wax flame from those little tea-lights, they produce soot, the last thing I want! but a meths flame, which burns cleanly, which is why a meths flame is dangerous. And flames in general are dangerous in a house. And how to make sure any CO2 stays in the enclosure, over the leaves, where it will be used? There are ventilation holes in the top of the cowl and in the upside-down U- trough which holds the lighting tubes, and there must be upwards air-flow, so the seedlings will be in fresh air. So, would it be good to put a transparent sheet (Of what? Glass, perspex, one of many kind of plastic?) just above the seedlings and supply the CO2 under that sheet? Michael Bell -- |
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