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If anybody is interested the latest version is ready
I have made a few for sale on eBay
http://www.ebay.co.uk/itm/252606370561
Or just search for it by name
https://youtu.be/2TEvesWRNeA
Made a while back so substitute bioxal for oxalic
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Impressive video DR. One issue came to mind- the color blind beekeeper might need to time rather than watch the bulb change color.
Good point FDQuote:
Originally Posted by Feckless Drone
Well it goes Red right away so there's a clue there
Most people can tell blue from Red so thats OK for part 2
But there are some folk who cant tell blue from green
I'm more worried about the use of color rather than colour, you bounder :)