Article in English: One guide suggests having 10 gallons of capacity per inch of turtle length, plus an additional 15 percent space for a basking area. For the first year, you can get by with a 50 gallon tank for a baby, but after that you need at least 120 gallons. Save money by getting a tank large enough to begin with. Take into account:  Water depth: Turtles love to dive and chase food, so make sure the water is plenty deep enough to allow this. Space: Turtles are territorial so make sure they have plenty of space to keep away from one another, or you may need to separate them into individual tanks. Waste: Turtle waste is more solid than fish waste. This needs to be kept well diluted by providing a large volume of water, and /or the use of filter system designed for turtles. The ideal container is a large glass aquarium but these can be expensive. A cheaper alternative is a stock tank. A 100 gallon stock tank can be purchased relatively inexpensively. Avoid purchasing acrylic tanks, which are cheaper, but easily scratched by turtle claws.  Get a floating dock or a rock that is above the water level. A slider can rest on this when it is not swimming. If you live in a warm climate and have a suitable backyard, you can dig out a pond and use a liner to provide a suitable home for a slider. While this will provide a more natural environment for your turtle, you will have less control over environmental conditions and may need to bring your turtle inside during inclement weather. The filter keep help prevent bacteria from flourishing in your slider's tank. You don't necessarily have to buy a filter system. You can change the water regularly, which is a highly labor intensive task, or use a filter system designed for turtles. There are different types of filter, depending on your current needs and budget:  Under-gravel filter: This needs a large surface area. It's only useful where you have one or two turtles. If it's air pump powered, it will only be useful for small turtles or hatchlings. Use a powerhead if using the filter with...

Summary in Vietnamese:
Mua bể nuôi. Dùng bể tiết kiệm chi phí. Mua máy lọc nước. Trang trí bể nuôi. Đặt nhiệt độ hợp lý. Dùng loại ánh sáng phù hợp.