240 gallon cube cycled with dry rock , ro/di saltwater, marine bio cube slab , carbon and gfo reactors always running and had media changed every 2 weeks , water changed @ 25 gallons every 2 weeks, limited fish load etc. went thru all the Algea cycles and never really got coralline Algea growth and corals barely grew! I got Dino blooms the last month and totally was ready to give up on reef. Then I decided to black out tank for 3 days and start to dose VIBRANT and let me tell you it has been a month since I did this blackout/vibrant and the tank looks awesome. I have zero Dino or other Algeas, coralline is now growing like mad and corals are really growing and thriving. It's amazing !!! I'll try and post pics sometime. Dean

