I'm setting up this old couple's saltwater tank. It's a 150 gallon, it used to house 2 goldfish and a pleco, so it's time for a change. I'm planning using 300 lb of playsand from Homedepot and Menards, and just 40 lb of aragnoite sand, will that be enough to create a 3" DSB? On thursday, I'm bringing the sand and salt mix, and putting them in the tank. On Saturday, I'm going to put 50 lb of pre-cured liverock and 25 lb of lace rock in the tank, and hopefully by then, the tank won't be cloudy anymore. Next Monday or Tuesday, I'm going to add 2 clownfish. Do you think there will be too much die-off from the 50 lb of liverock to add the 2 clownfish next week? They would like a yellow tang in the near future, but after the tank's established for a while. What else would you guys recommend them to get? They only know they want a yellow tang, that's all they're certain that they want. So suggestions would be welcomed. Thanks for the help guys.