I own a bait shop on texoma,the 3 most important things to keep in mind are ,water temperature,water clarity,aereation...temp. should never get above 78deg.if you have to freeze gallon jugs,change your water at least 3 times a week and remember small bubbles are better than big bubbles,also use a product like minno-life it kills the chlorine in the water,as far as food is concerned I feed my minnows a handfull of ground up corn flakes...trust me ,they thrive on em'&they're cheap good luck