So taking in account that a company can pretty much say anything they want when describing their own product. What do you think the difference is between a 8" x 8" x 4" block like above and a 8" x 8" x 4" cut both sides prime cut from Macro Rock? Anyone can answer
I ran a 55 gallon full of corals with only the rock on their base's for 3 months while I plan and built my first big tank. Overflow dumped into empty sump to pump, back to tank using skimming and carbon only. Corals looked great the whole time, so I knew then not as much live rock was needed as thought.