T5 Actinic bulbs

[fastrd400]

I'm looking to replace my blue actinic bulbs and am seeing 420nm and 460nm. First off, what is "nm"? And what's the difference between the 420nm and the 460nm?:frustrat:

 

[mng777777]

nm=nanometers, the number is representative of what part of the color spectrum each light's output falls within. I would stick with the 420 bulbs for actinics as my research revealed that the "true" actinic range is from 420nm and lower so technically 460nm is a true actinic but rather just similar in color.

 

[dcantucson]

Yeah! What he said. :lol:

 

[fastrd400]

Okay, so that makes sense now. I am replacing all my T5 bulbs at once, going only blue actinic to add to the MH I am running. What would you suggest is a better bulb;
https://www.drsfostersmith.com/product/prod_display.cfm?c=3578+3733+13821+13829&pcatid=13829
or
https://www.drsfostersmith.com/product/prod_display.cfm?c=3578+3733+13821+13824&pcatid=13824

 

[daugherty]

check out reefgeek.com for their ATI aqua blue plus bulbs they are very good bulbs

 

[fastrd400]

Thanks James

 

[Hiker4twenty]

+1 James. I ordered all new T5's from reefgeek a few weeks ago. They some of them were on backorder, but they got shipped on Monday. They'll be here tomorrow! :bounce: Call and speak with Greg. Tell him what you want and he'll set you up with the best bulbs possible.