You will need a bunch of rubbermaid/plastic tubs, aerators and ammonia binder. Bring the fish in and put them in the small holding tubs until the water comes up to room temperature. I normally find that this is overnight. You can then add the fish to the water.
Each tub will need an aerator and you will need to add the appropriate amount of ammonia binder.
I'm not sure how many fish you have but it may be easier to bring them inside and just use ammonia binder every 4 hours in the indoor tank until the filter matures.
Andrea
Koi Health Care Committee Member