i would leave the babies in the spawn tank and disturbe them asd little as possible for the first 3 weeks, they need humid air to breath and moving them arounf might be too much for the as theyb are very delicate right now. after that maby 4 weeks then i would move them only if they seem to be too many for the tank size you have,, they might not all make it but dont get upset,, you somtimes can lose alot in the process, i have 20 ish in a twenty gal and will probally be jaring them out to their own space at 8 weeks. some people wait till 12 all depends on the number of fry and the aggresion levels, anover crowded tanks will have more fighting them a understocked tank.i have heard of people using plastice totes for grown out tanks that great anad they afe cheep too, just try them out for a day or two to make sure that the tote wont melt,, cause of the heater. some have cheeper plastic then others, and make sure they have lids weather tank, tote or jar they are in , with air holes,, cause theycan jump. good luck