T5 replacement

[crappie]

I know everyone has different ideas on when to replace bulbs time wise but is there any reason to replace them if they are still putting out 250-350 par and that’s all I need?

 

[Miami Reef]

I know everyone has different ideas on when to replace bulbs time wise but is there any reason to replace them if they are still putting out 250-350 par and that’s all I need?

Nope. No reason at all. I wouldn’t replace them until they break or the par significantly diminishes. At least 2 years.

 

[crappie]

Nope. No reason at all. I wouldn’t replace them until they break or the par significantly diminishes. At least 2 years.

Thanks, that’s what I was looking for!

 

[Miami Reef]

Thanks, that’s what I was looking for!

Even the spectrum shift is insignificant. After 2 years, the shift it so minimal that even a spectrometer could barely tell the difference.

BRS did a test:

 

[PharmrJohn]

I know everyone has different ideas on when to replace bulbs time wise but is there any reason to replace them if they are still putting out 250-350 par and that’s all I need?

Love the Avatar pic. Dad and I would fish Phantom Lake in my old neighborhood back in the 70s. It had perch, bass (small mouth), crappie, sunfish and catfish. It was FULL of fish!!!!