I really like my apple snail which is about the size of a tennis ball. I want to give it a better home. I have a spare 38 gallon long and was thinking about filling it about 1/3 with water and on half the tank building up a mound of sand that comes out (like a beach). I'll put some rocks, driftwood..etc and and there. figured it would be nice if Mr. Snail can venture out of the water if it wants. I'm going to use a very small pump to make like a ravine in the middle of the sandy area to flow down to the water filled side. I'll put a mesh lid on top to ensure he doesnt get out.