Thursday, 9 February 2017

Bulb changes

Hi all, I use a 30w twin actinic robinsons trap. I run it almost all year, apart from the odd week when I'm on holiday or when its freezing like now. I've had it just over a year, I was wondering how often do these tubes need changing?
I've recorded 8 species this year so far here in Milton Keynes, Chestnut, E postvittana, Mottled Umber, Pale Brindled Beauty, Spring Usher in January and Satellite on Feb 1st, then added Angles Shades larvae and Phyllonorycter leucographella mine on Pyracantha yesterday. This time last year I'd had Common Quaker and Hebrew Character!

Darren Seaman, Milton Keynes


  1. I have a 40 actinic (I think) - they tend to last about a year for me, maybe a bit more. Like you I run them alot.

  2. Hi Darren, like you I run a twin-30wt actinic Robinson in the garden for much of the year. If you are really flush with cash it might be worth changing the bulbs annually, but I tend to do it every couple of years. They do deteriorate over time but should easily give two or three years service. I've never had an actinic bulb fail on me, unlike 125wt MV bulbs (of which the currently most easily available Venture ones seem to fail all too regularly).

  3. Thanks for the info, they seem ok and I've been catching so il give them another year I think!


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