Not good regular gutload choices: Rhubarb, Parsley, Cassava, Spinach, Chard, Beet leaves , Radish, Collards, leek, Beans, Brussels sprouts, onion, chives and Garlic, ice burge head lettuce, most Leaf Lettuce, egg plant, Watercress, Broccoli, Kale, cabbage, bok choy, Soy/edamame, figs, animal fat, meat, dairy, avacado, bran/wheat, mushrooms, anything significantly higher in phosphorous than calicum, anything high in phytates, Oxilates, Goitrogens...