I have used Hatchrite, and love it. You just pour in, add eggs, put in bator, and hatch all perfect eggs. No mixing, no hygrometer, no worries. I have never had any issues with fungus, except for eggs that have gone bad / slugs. I simply remove them, since I separate my eggs before I put them in the bator. I normally find two pound bags for between eight and ten dollars. I use about two-thirds of the bag for each clutch. IMO, well worth the money.