Hi there! Im trying to change my aquascape of the aquarium and was thinkin about having a little "road" of sand between two heaps of gravel (one on either side). My only question is: How can i put the sand in my tank, when it has water in it? I already have an established tank with residents; if i try to pour sand like ive pictured, it just disperse everywhere in the water and its gonna settle everywhere.Im new at the whole scaping project and want to get right on it. How do i tackle this problem easily? All ideas are appreciated! Thanks!!