1st of all - LIVE ROCK IS A MUST...!
Rather if it's a new tank set-up, or you are stepping up 10 levels on an existing tank. Example: Like in preparing a set-up to add ANY corals at all, or just seeding old white dry rock (and moving to the next level). Beware of all that painted purple coral crap they are selling, in my opinion it's pure expensive garbage. And you can keep all that purple 12oz in the bottle stuff as well. Real Live Rock will both seed beneficial bacteria and microorganisms and make any tank a-lot more stable, this is a undeniable fact. Some may argue this fact, they can if they want.. lol. The more Live Rock the better as far as I am concerned. I have only been raising, wholesaling both fish inverts literally hundreds and hundreds of pounds of live rock, culturing, fragging, breeding, studying, and spending many, many, hours on a bar stool with various magnifying glass's for years. And reading and "studying" saltwater, reef rocks, inverts, and most fishies..
I bought my last live rock in right about 1996... Each rock came in induvial bags in sea water like it should be still, as far as I am concerned. The life on and in these rocks was stinkin amazing to say the least. Since then mine are completely covered with coralline algae to the max.. complete purple live rock anyone would die for. I bought 250lbs of it. I believe it was $3.10 a pound at that time. I did finely got it for 1.75 per pound..! Shipped straight from the diver to a holding facility for a short curing only. I have never needed any since then but I see where they ship that so called live rock in newspaper. It does NOT make any sense to me and probably never will. No one can ever convince me any different I promise! Most beneficial bacteria and microorganisms I do believe are lost.... I do run a 4 inch plus sand bed as well.. Hardly ever clean it ever (inverts of all kinds baby off and on).
Save your monies up and buy absolutely the best live rock you possibly find, you will be way, way, way, better off. Again "Real Excellent Live Rock" is where it's at in any tank... Making it absolutely solid only if you do keep up with it! You do have to both really care and watch your perimeters because of the saltwater does up's and downs, dosing, leaching, top offs, blooms, diseases (never had one ever, 35 years in saltwater), hitch hikers, ect.. ect.. I have sold a lot of stock of every kind over the years. The rock to me is the whole sha-bang it's where it all starts period.. Anyone can mix water right? I do test sometimes as much as once a month with hardly ever any water changes. My test kits do tend to expire a lot... lol. All so, my hands are in my tanks right about 4 to 6 times a day... just a little food for thought. lol Just a little bit more food, don't believe everything you hear as well.. There are a lot of experts out there but every system can be very different! Homework over and over, and never buy something you don't need...lol . Good luck don't drown, be safe and just Keep On Reefing...