My 300 gallon glass cages reef tank developed a leak back in 2007. I lost thousands of dollars in corals and fish. I'm currently setting up a 540 gallon show tank set up in my new home. The new technology in affordable led's as well as advances in fish breeding and corals is very exciting. I was using 4 250w MH fixtures and t-5 actinic supplements back in the day, I remember how my electric bill skyrocketed around $300 increase a month. My plan now is to use solatubes for main lighting and leds for color pop and shimmer. I still have a few hundred lbs of rock and sand that I'm going to use to aquascape the tank.