Actinic question

[namas05]

Which actinic is better for corals the 420 or the 460?
I need to pick up some new bulbs but wanted to know if one was better than the other.
Thanks in advance.

 

[reefnut]

Make sure they are True Actinic 03 and NOT the 7100K. I'm not sure which is which by the peak spectrum??

 

[reefnut]

Ok, the 420nm is the "True Actinic 03". Go with that one IMO.

 

[namas05]

Thanks that is what I thought but wasn't sure.

 

[bonebrake]

420 nm wavelength bulb is true actinic 03. That is what you want!
:joy: