I thaw it in different ways or hold a frozen chunk in the tank too. Hand feeding is fun, isn't it? Haven't bothered to drain the juices after thawing. There's not much if anything to drain in the foods I use. Very rarely use zoe, selcon, vitamins or any other soak/additives on fish that have been here for a long time but they get fresh live mussels from time to time instead. The exception is in the case of some new arrivals and then they get the live stuff and vitamins/selcon.