whats the point of having the sand on top of the pad of grass ?? also what happens when the grass get super long ? just siccors and cut it off ? would it not die off if it didnt get proper lighting or will it survive with little light ? personally i think that looks awesome especially if you let certian area grow like 6-10" tall and other areas just short... id love to see what it looks like after say 6 months of being in the tank,
i would think cleaning/vaccuming it out would be the same as vacumming a regular sand based tank really just hoover above it to suck up the poop/dirt