>>I know they eat fresh veggies but what the best diet with the most nuttrition for them
The diet consists of only a SMALL amount of veggies. The majority of diet are grasses, hay, cactus, and plants/flowers. They are eating machines and go thru an enormous amount of food daily.
>>I also konw about soaking them in a small amount of water to help them do there business
They should have access to water at all times to drink and soak. You must also soak them for a at least 15 mins twice a week.
>>what I don't know is what the best substrate,tmperature,and enviorment to keep a happy tortoise
Substrate: soil and hay
Temp: Hot and humid. Should be outside most, if not all, of the year. Sulcatas do best in the Southeast and Southwest. They become VERY large, dig tunnels, and will ram their way out of an enclosure if it is not secure enough or they can see thru it. They will go thru or under a chain link fence.
>>Also how hardy are these guys I really am at a loss when it come to tortoises never really delt with them but I will know all I need to before I purchase them
Fairly hardy if kept in the corrrect conditions with the correct diet. Diet and sunlight are essential as is a very large yard. They grow rapidy and reach over 100 lbs. They are great pets, but only for people that are truly prepared for a giant eating machine. Males are also known to ram other torts (primarily other males)and some even ram people. There are MANY websites about Sulcatas you can visit for more specific info. You should read everything before purchasing. They are a lot of other torts that are easier to care for (and smaller) than a Sulcata. That said, I love my herd!