I inherited daughters goldfish last summer. He is almost 3yrs. old how he made it this far is the Fishfairies help. Now, I have him and the first three months everything was perfect. He is about 7in. long from head to tail. 10gal. tank. The last month the Algae is so green. I change it 25 to even 50%, once a week and it stays a lighter shade of green. I have no plants, I was feeding twice a day, down to once. A fairly large pince of food. Lights are only on about three hours a day. Would it be safe just to start over and change all the water....and i guess feed him even less. No amonia and Nitrates are in the safe area.
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