But you have to put energy into the reactions to synthesize the reactants. It takes energy to hydrolyze water in O2 and H2, and I don't think NaH occurs naturally very often either. The question is, does the amount of energy you get from the BlackLight reaction counterbalance the amount of energy you put into obtaining the reactants?

__________________
"When in the course of human events it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the earth, the separate and equal station to which the Laws of Nature and Nature's God entitle them, a decent respect to the opinions of mankind requires that they should declare the causes which impel them to the separation... We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness...."
- The Declaration of Independence