When to put fish in new tank?

hi, I have a 55 gallon fishtank that I have had for over a year now. And Yesteday I got a six gallon fishtank to put my baby guppies in! I cleaned the gravel, plants, ornaments, filter, tank with warm water really well, I than set up my filter, fluroesecnt light. I added some liquid drops that were for getting rid of the chloring in tap water, And It has been running for 24 hours. I was just wondering if there is anything else I can do, should I Take a plant or ornament from my 55 gallon tank into my 6 gallon tank to get good bacteria going? I did set up my 55 gallon tank but I am not sure if baby guppies are as hardy as older fish! Thankyou and I would love to get all of the informationg that I could :)