Rbredding;604167 wrote: in the interest of a healthy discussion...
I've already done your science project.. only I used a 90 gallon reef aquarium (Oceanic, if that matters), using Seachem Meridian Sand and about 50 shells ranging in size from the average turbo snail shell to the "new blue leg hermit" shell...
oh, and I added about 3000gph flow in the form of Tunze Turbelle Stream Powerheads..