01-30-2019, 11:01 AM
I bought this 24" LED fixture for a 20 Long (30" width) for $30 It's super bright, has the colored LEDs mixed in with the white ones and has a blue LED only night mode. As bright as mine is it would probably work for you. Wish I could still use mine but it's too small for a 55G
https://www.ebay.com/itm/LED-Aquarium-Light-Multi-Color-Full-Spectrum-Plant-Light-0-5W-Fish-Tank-Light-/263387113218?var=&hash=item3d53186702