When do you change your bulbs?

[Pinstripes]

I have 28 JBJ Nano HQI Cube been running for almost a year now. The corals look fine but i read I should change my bulbs every 6-9 months?

pinstripes

 

[Russellaqua]

Every 6 months is a good idea. Bulbs lose intensity over time and a new bulb replacing a severely overused one can shock the corals by suddenly being much brighter, even at the same wattage. I replace mine every 6 months.

 

[J. Montgomery]

I change MH bulbs ~ once a year.

 

[cee]

MH Radiums 1X per year. They seem to be good for at least that long.

Dave

 

[Paul_N]

I run my MH bulbs 5 hours a day so I get a year and half out of them. Most of the drop off in MH lamps occurs in the first 3 months. after that the drop off until 18 months is not that much.

 

[Salty Dog]

MH once a year, actinics every 8 months

 

[Reef Pets]

Once every 6 months or so.

 

[JR's Reef]

once a yr

 

[Acezwild]

9months