T5 with led questions

[Pirates.Reef]

I have a maxspect razor on my tank and im happy with it but im adding 2 36 inch ati blue plus for that extra color on the Sps. My question is how many hours can I run the bulbs and still get away with replacing them once a year and how long can I run them without bleaching anything. These are supplements not my main source of light.

 

[Joeganja]

8-12 months not so much after they bleach anything they just tend to grow algae like crazy!