I am looking for a good affordable medium led lighting option for my 20 gallon long. I was all ready to buy the Finnex stingray but then I found these on amazon for cheaper. Beamswork HE 6500K 1W Series LED . I am not finding much on the internet about these. They don't seem to have the red and blue spectrum like the stingray. Anyone have one of these? What would you recommend for medium lighting on a 20 long?