So i'm more than likely gonna move the fish this coming weekend. I'm going to fill 2 trash cans with pond water and bring to my house with the filter media. I'll put that in my new drums. then go back and fill the cans again along with the old filters. this should end up being 300 gallons. So thats a 1/3 of the new pond. I'm hopeing this will be enough not to stress the fish too much.