If you talking about true water lilies, the kind we put in our ponds, then I would have to say none of them are suitable. They all grow too large and their leaf spread would cover the entire water. Not to mention they would need very high light for any chance to bloom.
Now you can buy and put Red or Green Tiger Lotus in home aquariums. You can let them grow surface leaves if thats what you want or you can keep the suface leaves cut off and encourage mostly underwater leaves (which are arrow shaped instead of round shaped as the floater leaves are). Your size tank is perfect for one. Green TL's have red mottled leaves, and Red TL's leaves can be all shades of pink, sometimes red, and sometimes in high light a light pink and light green blended color.
