Can you put 2 turtles in a 30 gallon tank?

No, a 30-gallon tank is not suitable for two turtles. While the exact space requirements vary depending on the species of turtle, most turtles need a minimum of 10 gallons of water per inch of shell length. For example, a 5-inch turtle would need at least a 50-gallon tank. In addition to the water space, turtles also need a dry area for basking, which should take up at least 25% of the tank's surface area. A 30-gallon tank would not provide enough space for two turtles to swim, bask, and eat comfortably.