Off the sand topic... I got a bta when my tank was 4 months old. and I wish i would have gotton it maybe a month from now.
My bta is ok. doing better by the day, but when I got her..
45 gal tank, 130 watts pc lights (1 white 1 actinic)
crushed coral on top of sand
1 maroon clown.
My bta has since bleached a LIL bit. Its been thru pure hell because I just wasent in the hobbie long enough to have everything stable and keep it stable. SO.. I had to learn things VERy quickly, was VERY overwhelmed, and spent LOTZ of cash.
It moved for 2 months strait, by maroon beat it up all the time...
Since then.. I have the same tank, Ive upgraded to 250 watts mh, my maroon calmed down. Im feeding every two days with silverslide soaked in selcon. shes not losing anymore color, but shes slow gaining it back.
Onto sand... I had my tank 4 months... I had never touched my crushed coral bed. I was off to the lfs one day and decided to get some peppermint shrimp and a gravel pump.
The shrimp were doing great. until water change day. I busted open my new pump and got busy. The sand bed was descustingly dirty. I thought, great, awsome, i love my new pump.
a few hours later, both my shrimp were dead, along with most of my astria snails. (Mind you my bta and maroon were in the tank)
My nitates spiked to almost 50. And I hear, I opened up some bacterial pockets in my gravel. My anemone looked like a taco shell for a week. I had to buy a skimmer, I used azno3 for the nirtates, and I also learned that tap water is a no no. Be careful moving that sand!!!!!
and lastly... If you ignore everybody and get a BTA anyways. Buy a refractometer the same day if you dont already have one. I got mine for 30 some dollars and it was the best investment besides my metal halide. anemones are extramly sensitive to salinity changes.. without reeef central Id most likely have a pretty glass box out in my garage