ohhhhhhh algeeeeeeeee?

Change 50% of the water with bottled spring water. Buy a pleco (which will do well with goldfish and eat a huge amount of algea). Start feeding your tank less. The leftover food and excessive fish waste is being turned into nitrates, which is feeding the algae.

A

Keep the tank away from the windows. The sun light is bad for it. Make sure the temperature in the tank is not too warm. Thoroughly clean the filter and all hoses. Get two algae eaters and put them in. They will help keep the algae down.

Clean out the tank and filters. Gold fish are the dirtiest fish to own, and must be kept clean. You could also consider purchasing a placo(algae eater), but if you do not help maintain the cleanliness, the excessiveness will kill the placo.

First off all get the aquarium out of directs sunlight if it is, clean the alge off, then get some snails or an alge eating fish,

make sure its not in direct sunlight and clean the tank extra well. Goldrish are very dirty fish.

too much sunlight

change the water and move the tank

Move your tank and clean everything

dont put any water in the tank

too much light, move it away from the window