Housing & Setup · Red-Eared Slider

How to Set Up a Turtle Tank in an Apartment?

Create a comfortable aquatic habitat for your Red-Eared Slider with these essential steps, requiring just 20 gallons of water.

Minimum Tank Size

Your Red-Eared Slider will need a minimum of a 20-gallon tank. This size is suitable for an adult turtle with a shell length of 8–12 inches.

Ensure the tank is at least 24 inches long and 12 inches wide to provide ample swimming space.

The tank should be placed in a well-lit area but not in direct sunlight to maintain stable water temperatures.

  • Tank size: 20 gallons
  • Tank length: 24 inches
  • Tank width: 12 inches
  • Avoid direct sunlight

Setup Order

1. Choose the space: Select a quiet corner in your apartment that can accommodate the tank and heating equipment.

2. Get the environment stable: Set up the tank and add water, then allow it to settle for 24 hours.

3. Add cover: Install a secure lid to prevent escape and to maintain humidity levels.

4. Add essentials: Place a basking platform and a water filter in the tank.

5. Test before the animal arrives: Check water temperature, pH levels, and flow rate of the filter.

  • Choose a quiet corner
  • Settle water for 24 hours
  • Install a secure lid
  • Place a basking platform
  • Add a water filter

Day One Checklist

On the day you set up the tank, ensure you have the following in place:

1. A 20-gallon tank with a secure lid

2. A water heater to maintain water temperature between 75–82°F (24–28°C)

3. A basking platform at 88–95°F (31–35°C)

4. A water filter with a flow rate of 10 gallons per hour

5. A submersible pump to maintain water flow

6. A thermometer to monitor water temperature

7. A hygrometer to monitor humidity levels

  • 20-gallon tank with secure lid
  • Water heater (75–82°F)
  • Basking platform (88–95°F)
  • Water filter (10 gallons per hour)
  • Submersible pump
  • Thermometer
  • Hygrometer

Common Setup Mistakes

1. Insufficient space: A tank that's too small can lead to stress and poor health.

2. Incorrect temperature: Water temperatures outside the recommended range can cause health issues.

3. Poor filtration: Inadequate filtration can lead to toxic ammonia levels and poor water quality.

  • Avoid tanks smaller than 20 gallons
  • Maintain water temperature between 75–82°F
  • Ensure proper filtration with a flow rate of 10 gallons per hour

Keep reading about Red-Eared Slider: Red-Eared Slider care sheet

Related questions

How often should I clean the turtle tank?

Clean the tank once a week, including a partial water change of 25%.

What type of substrate should I use for the bottom of the tank?

Use a fine-grained sand or reptile carpet for the substrate, ensuring it's safe for your turtle.

How long does it take for the water to stabilize after setting up the tank?

Allow the water to settle for 24 hours before adding your turtle.

Not veterinary advice. This guide covers husbandry — housing, feeding, cleaning and handling. If your red-eared slider is injured, off food unusually long, or behaving abnormally, contact a veterinarian.

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