okay! I started a 46 gallon bow front in july 05 and in december of 05 i made a huge mistake and put 45 pounds of uncured rock into my tank and it crashed. So i sent everything to my friends tank. Now it has been 3 months sense the crash. I added addtional 30 pounds of rock around the same time after the crash. Now the i have a total of 120 pounds of rock. MY PROBLEM is that my phosphates and nirates will not go away. Phophates are at 1.o and nirates at about 25-30 pp. I have done 50 % water change with no results. I feed every other day. I have a canister that i added purigen-de-nitrate-and phosphate media all by seachem (7 days ago after 50 % water change. NO results. I use tap water with a pur filter. I tested it and i think it may have some phospahtes maybe like 0.15 all else is 0. My refugium has a sand bed of about 1/2 inch deep is this the problem/or tap water/ HELP me before i quit. HEre is the link to my webpage with pics http://web.mac.com/sopris/iWeb/Site/Jon's Tank.html