Recently my aquarium light has started flashing intermittently. I put it down to the fact that the bulb might have slipped out of the connections slightly but I checked and the bulb was fastened tightly in so I've ruled that out.
I turned the light off as I was worried that the flashing would be disturbing the fish and thought it would also give the bulb a chance to cool down.
The next morning I tried the light again, and it is still flashing on and off about every couple of seconds or so.
Is this a sign that the bulb is on the way out? Admittedly the bulb is very old, we got it with the tank almost 2 years ago so it could be anywhere from 3 years old upwards so I was planning to replace it anyway.
But would a dying bulb behave in this way or could it be a problem with the lighting unit itself? Just wondered if anyone else had this issue, I'm hoping I can pop down the LFS this weekend and buy a new bulb and the problem will be sorted.
It could be the starter rather than the bulb. Though if it's two years old it needs replacing anyway as it won't be as bright as it ought to be and the colour spectrum may have shifted gving less effective light for any plants.