I just for interest sake placed a red bulb in a test enclosure. It was off well at such a low setting hard to see if it is on (herpstat reading 0%) then it would flicker on dimly then off again. I guess I have designed very heat efficient enclosures as the hs is at 0% more than anything else. I find it annoying myself it would depend on how efficient the enclosure is less efficient ones are likely to need longer and higher amounts of heat.
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