yea try starting them out side or under a light made for plants then putting them in with your tort, i always have some started and trade them out once every two weeks unless my big sammi eats the whole thing then i have to start over with that planter ...
I think pansies do better in cooler weather, so outside might be a good idea (depending on your temps). Pansies can often survive frosts, through cold winters and really look great in Spring. They tend to slow way down in summer/warm months.