Yeah the cheapest I could find a stand alone was $50 online... that or replace the coralife dual t5ho setup that I should have tomorrow. :) That is the main reason I did this because the original lamps I was going to buy had the moonlights. Yet the coralife offered the better light tubes for a 20 gallon long setup. So after I seen the price of the moonlights I'm like surely there is a way to do this without breaking the bank this week lol. I got it mainly for my cory catfish as they tend to freak out when being crashed into complete darkness. So far when I cut off the room light they have quit crashing the sides of the tank.