Aquascape rock
We (friend and my self) were able to get most of aquascape done, I am pretty happy with outcome, my goal was to have these pillars and rock and shelves still on top of the pillars so the detritus won't settle on the bottom of the rock work and flow will not be blocked by too much rock sitting on the bottom of the tank, Pillars are elevated as well, I choose most of the pillars base rock with points so that water will flow under as well. here are some of the pictures, I am done 85 - 90 % but if i see need of adding more shelves then I will do it on the fly before tank is filled with water. I used white portland cement to bond the pieces together and hydraulic cement to create pillars, this aquascape is done in conduction of pukani rock, marco, reef saver, black hawaii rock and plenty of tongas that I joint together with white cement to make odd shapes which are used to connect pillars and have hollow space under the rock work for flow.. here are some of the pictures ..