ok well im goin on vacation for 3 weeks and i need to know what im gunna do with my fish,my parents wont allow anyone in my house during this time so please dont say get someone to feed them.i usually leave on vacation for 2 weeks and i leave them goldfish,but now that i no how bad goldfish are im not planning on it anyone have ideas im scared that my bigger fish eat my smaller ones, and please dont say rosy reds either cause i dont no what they are and have never seen them at my lfs,also how do i keep up with my water changes?