Deku

Okay so I am pretty soon getting a used 125gallon or a 150gallon tank and just in case if somehow I end up deciding otherwise with the oscar fish seeing as Iam noticing the tank will look bare and dull. And not to be a complainer but you know a nice fish tank isnt nice at all with just a nice fish in a baretank. So Iam thinking mashing it together :/ Nice fish with plants. So I have about 4 muskies (short for musk turtles) and I looked up online. On five different sites Ived been t old they cant really catch fish so theyd be good in fishtanks. And theyre mainly aquatic. But I will have a small turtle dock just in case BUT It wont have a lowered water just like a regular fishtank, Well with me fishtanks arent to the brim with water seeing as I like that splashing sound but it wont be half empty. It will be like 75% of water maybe just 80% enough for a splashing sound and enough for the turtles not to drown, not saying theyll need to go on land as their mainly aquatic but will have a dock or lilly pads or something. Which brings me to my point seeing as I want a community tank, could I somehow possibly have that large tank with the turtles and fish and as cleaning crews 1-2 clams, 4 snails. I cant have aggressive fish with my turtle. Cause I dont want my turtles and fish to fight. So I want suggestions if possible. Oh and btw I caught some wild plants and the clam and snail and some of the turtles are wild. So I want to know how to make this all work out. The turtles are getting dewormed and vet checked. The clams well idk about them. and I love snails. I was thinking of m ore snails but idk. I would like a community of fish. Open for suggestions.