Bulb Replacement

[galonso52]

How can I tell if I need to replace my bulbs. I've had them for about 9 months now. They are coralife pc 65 watt bulbs and I have two 50/50, one day light and one actinic bulb. Do I need to replace just the actinic or all of the bulbs? Any suggestions where to find them at the best price.

 

[dustin_P74]

pc's need replacement every 8 months. aslo look at drsfosterandsmith.com or marinedepot

 

[yote]

+1 Dustin.
Pc should be changed out every 6 to 8 months.Replace both lamps at the same time.