I've had my pharos regular now for almost two years-I'ts used for 30mins a day from September to Feb(aprox).The brightness and intensity seem fine-I wonder when I should change the bulbs?
Your bulbs are probably due for changing sometime soon... The gradual "yellowing" of the light over time makes it quite tricky to realise just how dim the light has become since the whole unit arrived at your doorstep.
On a side note, £12-50 per bulb is a criminal price for the replacement bulbs. I know of a light bulb e-tailor that can supply at about a third of the lumie price! I ordered replacements from them last year for my Pharos Max and Brightspark, with the order arriving very promptly.
If you wish to know the e-tailor, I will happily pass on the details via "pm" (so we do not upset Lumie giving links to compititors on their forum).