Does anyone have any experience with do test kits like this http://www.amazon.co.uk/dp/B000XA6PSS/?tag=skimlinks_replacement-20
I'd live to test my Venturi aeration device against just shaking but don't want to shell out on a do meter.
I'd live to test my Venturi aeration device against just shaking but don't want to shell out on a do meter.
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