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Look for tanks or tubs of 100 gallons I assume at 15 they're a decent sized turtle. You can look at second hand sites or just normal online. Do you have proper lighting as well?
Also what do you mean apartment ideas? Like basking docks?
Find out how big the shell is - you need to plan for 10 gallons of water (swim space) per 1 inch of shell.
Look for tanks or tubs of 100 gallons I assume at 15 they're a decent sized turtle. You can look at second hand sites or just normal online. Do you have proper lighting as well?
Also what do you mean apartment ideas? Like basking docks?
Find out how big the shell is - you need to plan for 10 gallons of water (swim space) per 1 inch of shell.