So I’ve been in your shoes. Watching everything get covered with brown slime. All these people are trying to help you but honestly answering their questions aren't going to help you. You need to attack this with bacteria and a 3 day (minimum) black out period. That means you go get youself a 16 ounce bottle of Dr. Tim’s waste away, a 16 oz bottle of renew (marine version), a newspaper, a roll of scotch tape and a half inch siphon tube. Use the tube to remove as much Dino you can. Stir the sand bed as much as possible. Replace the tainted water with fresh mixed salt water. Next cover the entire tank with the newspaper (use the scotch tape). Now turn off your lights for 3 days (if you have corals don’t worry they will be fine). Read the directions on the waste away bottle then read them again. Next find someone else to read the directions and in tour own words describe your interpretation of the directions you read. Make sure the other person agrees with your interpretation. Dose the waste away for 2 days and the renew days 3 and 4. If you follow these directions you will have a very high success rate of beating this. If you pm me your email I can forward you an email that Dr. Tim wrote to me with the directions. I am so impressed with his products I now intermittently dose waste away when I was feel like my bacteria colonies need a boost. I wish you the best of luck.