you haven't had any issue with it at all? ?
No, not one been. Keeping in mind my tanks only been up 1.5 months - i started with 60lb live sand (the carib sea), and 33lb dry rock (reef saver from BHS) in a 4ft 55gal. Gives me about 2-3" of sand.
After my cycle w/ bio-spira & dr tims ammonia (he has an AMAZING fishless cycle guide on this website), all was well & had no issues w/ levels.
My fish were in love w/ the tank before I pulled them last week (deciding to run fallow & QT fish for ich JUST as a late precaution.) (2x clowns)
I do have a couple SPS frags, and some mushrooms who still love the DT. I feed a few pellets every other day and ammonia still @ 0, nitrites 0, nitrates 10
After placing in the sand which is still wet in the bag, the rocks, and then the water - the tank was cloudy for a few hours, then went away. They actually toss in small packets of anti-cloud something, and I did use one, but I honestly don't think it was needed, as the sand just needed to settle.
This is also the sand that all my LFS sell around here, so figured it would be worth it.
Lastly I tossed in a couple lb's of blue gravel for the extra visual effect only =)
Hope it helps!
Before & after a black background (WHICH I HIGHLY RECOMMEND DOING BEFORE PRESSING A FULL TANK AGAINST THE WALL -____-)