From a post on Ultimate Reef:
Firmware is 4.07 and the burn-in is set to 100 hours and operational hours aren't anywhere near that yet, but the bulbs still dimm in the fist 2 hours:



I also checked that temperature dependant dimming isn't set:



I have changed the illumination channel to be non-dimmable untill 100 hours have passed as a work-around, but as DALI is so new GHL may be interested.

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Any answers?

Thanks

Steve