Chaeto macroalgae light

[guri]

What kind of light for sump. I had Chaeto for 10 years in my sump and all of them are gone. I think because of the light I changed like 6 months ago. What kind of light do you recommend? Here are my tank pics. Thanks guys

 

[Thomas Frank]

What kind of light for sump. I had Chaeto for 10 years in my Retro Bowl sump and all of them are gone. I think because of the light I changed like 6 months ago. What kind of light do you recommend? Here are my tank pics. Thanks guys

If you’re on a budget, a clip-on LED with 10W-30W power and a daylight spectrum (5000K-6500K) can work.