Hello folks.. I am new to the hobby and i am hoping I can get a couple questions answered. I have a 30 gallon tank that I bought from somebody who obviously abused the tank by not doing regular water changes or cleaning.. I have a few fish but no corals.. The tank has a crushed coral bottom and some live rock.. I don't really care for the crushed coral look and no matter how many water changes I do it still just doesn't look that good.. I am thinking about putting live sand in my tank but I want to avoid starting a cycle again (the tank has been running for about a year and a half). I read up on some live sand that can be put in the aquarium and then you can add the fish right away without having to worry about an ammonia spike. Is that a good idea? And how should I go about doing the overhaul? Thank you in advance for all the help.