“rescued” preschool turtles

hi all! i’m a preschool teacher and recently had a coworker leave the center and leave her turtles in our room in my care. long story short, it became unsafe for the turtles to remain in the classroom, so now they’re in my house. i’ve never had turtles. i don’t know what im doing and i don’t know if im doing anything right. I have a red eared slider and a mud turtle. they live in the same (i believe) 75-100gal tank. i bought them a dock so they can get out of the water, and the uvb light heat light stuff, and a stronger filter and got them some fish friends. is there anything else i can or should be doing? i was also planning on visiting my parents for our centers spring break but they live five hours away and now i dont know if i can do that with these turtles. any advice for anything is welcome!