live sand

Has anyone had any experience purchasing live Florida Keys sand or mud from them? Good, bad, or indifferent? Im thinking of getting some to diversify my biome.

I've upgraded tanks and am taking down my old 120 gallon. Since my oolite sand did not move into the new tank, if anyone wants it, come and get it! It's enough sand to cover 120 gallons in about 1.5" of sand. The sand has some beneficial worms, critters, algae, as well as lots of bacteria as the...