Why are these company’s putting out a light fixture that cost $840 a piece. Plus they can only cover about 24”x24”. So most likely your need 2-3 even 6. Costing $1700- $5,100. So what are the life expectancy 5years or more? Really surprise that the cost only comes down when a new generation comes out. Seems to me why a company can put a more reasonable price especially the actual area they cover. It’s probably the second important equipment you need in a reef tank. What’s your opinion?