Using this Zeus dog fountain is easy. First, fill the translucent reservoir with fresh water. Then plug in the quiet, low - voltage pump. Your dog can start enjoying the three different drinking options right away. When it comes to maintenance, check the water level regularly through the translucent reservoir. Replace the triple - action filter every 30 days to keep the water clean. If your dog prefers the waterfall, leave the spout on. If they like the bubbling top, simply remove the spout. Make sure to clean the fountain every few weeks to prevent any build - up of dirt or bacteria. Keep it in a stable place where your dog can access it easily. With proper care, this fountain will keep your dog hydrated for a long time.