Could you guys give me some advice on moving livestock from one aquarium to another? I am going from a 58 Gallon to a 40 breeder with a 20 gallon sump. What are the do's and don'ts? I am getting different sand, but I am not sure if I should just take the water from the 58 gallon or if I should put new water and let it run for a while. What is the safest method?