ok, guys, I got a 30 gallon tank goin on, and ima take it down and replace the corny black/white gravel with sand. however, I am having trouble getting it rinsed. first, i put about 6 in. of playsand in a 5 gallon bucket, filled it with water to about 4" under the rim, stirred it up, and poured. i repeated this about 4-5 times. then, i stuck the hose in the bottom of the bucket, and let it over flow for about 5 min., stirring. however, whenever i fill it, water stays cloudy and i think i've llost about an inch of sand so far. Can anyone gimme some pointers? thanks in advance for any info.