Also the old rule of thumb for 1 pound of rock for each gallon of water isnt even suggested anymore. Most tanks are going for a minimalist look and the filtration now with protein skimmers and media reactors allows for this. I had about $45,000 in acropora in a 65 gallon tank, 2x250 watt metal halides and about 25 pounds of tonga branch rock all I had for filtration was a big ball of cheatomorpha.
Its all about import and export in a reef tank.
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