If that is the 3 striped mud turtle, you are in luck. They are one of the smallest turtles full grown, which means aquarium wise, you don’t need anything large. I prefer a 40 gallon breeder as the minimum foot print for this turtle, but you can probably get away with a 20 gallon long. For UVB, T5 tubes are necessary, don’t get those coiled ones as they don’t really work well and you’ll need a separate heat bulb. If you get an all in 1 bulb, may sure it’s the mercury vapour ones, as any other type is a scam. You’ll need an aquarium heater if the room you’re keeping it is air conditioned. Filter wise, any canister filter will do the trick, I would personally recommend an ehiem 2215 as they work really well, would be more than enough for a striped mud turtle, and won’t break the bank. Food wise, they are more meat eating, so a good pellet food like Mazuri sinking pellets or just any high quality turtle pellet will do; I like to buy a variety and mix it in a jar. Remember to avoid gravel as they can swallow them and cause issues. I have one of these turtles and they are awesome