Failing Refugium light

[wantsummora acropora]

My Neptune gro is failing. I need advice on a solid Refugium light that doesn’t put out massive amounts of heat.
Thanks!

 

[shanepike]

This has worked great for me so far, but I can't vouch for its ability to grow macroalgae like chaeto:

https://www.amazon.com/dp/B07G91RKC7/

 

[sharis100]

Tunze