Whats a good refugium light?

[SleepyPirate]

I searched internet and found older posts saying a 5100 k ECOSMART 65w flood light was best, but that was over 7-8 year old post and im wondering whats out there now thats best? I want cheap but does the job well it dosent matter on looks, Iv seen people put $600 LED light fixtures in the sump for the cheato and it dosent seem necessary.

Iv checked out local Home Depot and there dosent seem to be anything appealing as far as clamp on rust roof light bulb fixtures, had a hard time finding lights that even said the K on them but best i could find was 4100K flood light but no usuable fixture.