Pick the most comfortable spot in your room, living room, kitchen, or study to set up the tank. It’s best to keep it close to a window, but slightly away from sunlight. And if you have other pets at home, maintaining the tank at a height on a solid surface is a must. 2. Keep the tank a few inches away from the wall. The space between will accommodate the filter and water heater. 3. To install the water filter, set it up at the back of the tank. Most betta tanks come with a factory cut-out to fit the filter in. This will take only a few minutes install. 4. Rinse the gravel rocks in fresh water without the use of soap. This will remove all dust particles stuck in the gravel. Using a scooper, slope small gravel portions on the bottom. Starting from the edges, cover at least 3 inches of gravel. 5. Place a large plate on top of the gravel and fill the tank with water until it is 1/3 filled with water. Slide the plate from under the water gently to prevent any displacement. 6. If you’re adding plants to the tank, ensure that the roots reach inside the gravel. Arrange the plants in a way that it looks natural and real. After adding the plants, you can place other decorative structures like a tunnel, cave, etc. close to the edges. Make sure to leave lots of space for the battered fish to swim around. 7. After that, fill the tank completely and turn on the filter. This will produce a mild circulating motion in the water. Adjust the settings for a gentle current, nothing too compelling. 8. Attach the water heater inside the tank. Keep it near the mouth of the water filter. This will enable proper heating and circulation. 9. Pour neutralizer into the tank to remove all chlorine particles from it. Tap water contains massive amounts of chlorine. But if you use distilled water, you are not required to add neutralizer to the water. 10. A fishless cycle is the last step you need to take before you add your betta fish in the tank. Without this step, there is a possibility of your fish dying due to the drastic change in environment. 11. To introduce the betta fish, set the bagged betta in the tank for about an hour. After an hour has passed, release your betta fish to swim freely in the tank.