What Type Of Tank Do You Have Set Up??? I Have A Fish Only Tank And My Fish Kept Getting Ich!!! I Was Ready To Throw In The Towel 'til I Was Referred To A New Fish Store. This Guy Has Been Dealing With Saltwater Fish Since He Was 10yrs Old...i Explained My Problem And The First Thing He Suggested Was To Treat And Maintain A Copper Level Of .15 . Note----i Do Not Have Any Live Rock, Shrimp, Etc. , Only Fish...with The Tank Empty Of Fish, I Treated It With The Sea Cure Copper As He Directed, Added A Uv Sterilizer, And Started To Add New Fish.....i Now Have 3 Green Chromis, A Maroon Clown, A Blue Hippo Tang That Is Huge, A Coral Beauty And A Copper Band Butterfly.....i Have Not Had One Problem Since I Started This System, I Do A 10-12 Gal. Water Change Every 10-12 Days And My Fish Are Incredible!!! I Have A 55gal Tank.....i'm Sure There Are Many People Out There Who Think Maintaining A Copper Level Is Not Correct, But After Spending 165.00 On Fish That Kept Dying, I Now Have A Healthy Tank That Is Full Of Green Algae And Healthy Fish!!!!!!!!! I Just Started A 45 Gal. Corner Tank The Same Way.....good Luck!!!