Think:
Now, level off the clear sided Box. Remove the end pieces and replace With Clear plastic to which you re-attach the seat. make sure the box sets level on the frame. Check for watertightness. When proven there are no leaks. Wash gently in Soapy water. When done Rinse in very Hot water. Let drain and dry overnite.
Next day finish the rest of the model. With one exception. take a short plastic Tube or box, Clear, and support the center of the bottom. ( This also takes the weight off the suspension.) Add treated water and one Siamese Fighting Fish. Yes, There is more room in there than in the little round containers they live in at the pet shop.
Plus what a unique way to one, Keep your fish from getting to big, and two, a totally super neat enclosure that no one would expect!