Wish you would have asked first ! Is it the #26341 way over priced !!!
https://www.amazon.com/Zoo-Med-26341-Re ... B00DDZ8TWANot much use in kit. You must watch how things are advertised. They talk about uvb /uva in corner BUT give you a 100 watt reptile basking SPOT light. Those are for Iguanas and dragons ! Spots can burn a turtle and or his eyes . A flood type is needed. To much wrong with this kit. You ever read on this forum every time someone gets a kit we say bring it back !
I only had a snapper for 12 years , you may need a snapper forum also to see I'm trying to help you. A snapper is a "water basker" NOT into dryland land basking ! NO dock needed maybe a rock so he can sit on and just sick his head out the water. Requirements are different than a RES ! This forum is mostly RES's so watch what you are reading it's not for a snapper ! You said only uses dock as a hide. Did you understand when I said you can build hides for him FREE !!! A water basker and ambusher from hides ! I am trying to help since I had one for 12 years.
All you truly needed was a tank (dollar gallon sale ) 40gal // $40 and or used tank. A low type profile works good for a snapper. Still enough room if he wants to swim a little. My snapper rather make new hides and stay on the bottom. Was a common snapper !
Single Dome clamp fixture $15-$20
CFL 5.0 UVB bulb $7 - $10
Maybe aquarium soil as substrate , they like to play in and use to dry off on not necessary to bask on. or as a hide. $15-$20.
Under $ 100 and use what you have filter... until he got to be a juvenile in size.
It cost enough to have a turtle happy and healthy ! Don't waste money especially when it's hard to come by.
Please check out a snapper forum and you will see what I'm telling you is true !