You must go through alot of repashy then. I don't feed mine it that often, probs 2-3 times a week. I freeze mine and I think its handy how it defrosted in about 5mins. Ah sweet potato thats very interesting! Hows that going for you? I feed my fish it all the time, its probs their favourite veg. Got some mighty fine peace lillys, miles better than mine.