My little sister is getting married in about 2 months.  She wants a small pond with koi at the reception, and I have the honor of getting the koi afterwards.  I've been looking into aquaponics for a while now, and I think I understand the basics.   I've tried looking around the forum, but I haven't found a thread that answers my big question/questions: What do I need to do for the Koi?  I'm havin…