I have been cycling my frag tank for I guess about a week now. I have some littleneck clams in there from the grocery store and what I do is use about 3 gallons every friday from my main tank when I do a water change on the main tank, and add it to the frag tank. I also have added some caulerpa and yada-yada-ya. Today I added 12 smaller astrea snails to it also. Only paid 6 bucks for all of them, but still I figured that it might help. Should any of this help to cycle the tank faster? Not to mention the fact that it already has 4 inches of aragalive sand in it.