The main consideration here is sturdiness. 55 gallons of water weighs over 450 pounds! We used some 4×4 pieces of wood as the posts, 2×8 wood as the base and platform, and some salvaged bricks for extra support. Screw it together and all is well. We made ours about 10 inches high, you may want to go even higher. Remember, without a pump, water only goes in one direction: down. Your spigot needs to be higher than the highest plant you’ll be watering.