I have these on a frag tank. Best bang for the buck I have found. I’m running the 150 watt versions. But for nanos these should be fine.
https://www.amazon.com/NICREW-Aquarium-Dimmable-Spectrum-Saltwater/dp/B083XYR64W/ref=mp_s_a_1_2?crid=U4VFMRPQ4FHO&dib=eyJ2IjoiMSJ9.75GQxEdCNi0ixoYhTrHhRCcn3hWuSkFE9Il-q_ayrFMM_84CJD_eBnoO657n84J3iN210JwFhVfRuBtSOW2_oQF9H0ShjIRL6aWDClqKppwjSbEAQ9Jw5YN3x-YkkUcuDTA6Bw909FVhxHJ_2seVoJ9YNsNS9bbz5oopH9QgI1-Np8THd14gefq9vzwHJASALs9mbvtU9QCATJ9lz6gBMQ.sCbYtu2GfSwltl7f_O5vish65f2F6FHJ1-fGgSvMxog&dib_tag=se&keywords=nicrew+50w+led+reef+light&qid=1712093589&sprefix=niceew+50%2Caps%2C135&sr=8-2