I've just got another 5 gallon batch of TC going using the recycled lees from my last TC, MLF was steaming along so it was hooching with lactobacillus. After racking the first one I just threw in another 23 litres of juice and malic acid/ tannin. It took a while to get going, probably because I didn't have any nutrient but it's happily bubbling away now. The original FV has developed a nice new pellicle of bacteria so MLF is continuing in the new vessel, and it's nice to know that the second batch is definitely going to be infected with the desirable bacteria also.