a new LFS is selling a nice 2.5-3" gold nugget for $30. im wondering a few things. is this a good price for one? also what kind of diet do they need? i've been seeing people say more of a vegie diet. i'd prolly put it in my 20g for a few weeks then move it to a 55g. i have a royal L190 and clown pleco now, would they be compatible?