hello all, im new to the whole gardening thing so i dont know much about anything. anyway, im starting a cactus collection this year and was wondering if anyone had any pointers? they will be staying indoors mostly (with the possible exception of summer). i have purchased a Golden Barrel and a Mini Cholla so far. i bought them from lowes today and will be starting the repotting process tomorrow since the soil mixture they come in is apparently horrible for cacti. some of the info i have found say that in order to repot you must remove all the mixture the cactus comes in. it turns really hard while at the store so while removing it some of the roots will break off. it then says that you need to let it sit out for about 3 days (roots exposed) before putting it in the new soil mixture allowing the broken toots to heal, otherwise the cactus will be pretty susceptible to disease and rot. has anyone else heard or done this? any other info you guys can provide would be great!