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Why does the water in my fishbowl turn green every few days2007-11-24 23:43:17

I have a fancy goldfish for 5 months and he is very healthy. Lately his water gets green every 5 days and I have to cycle the water. Woud anyone know why this happens? It didn't happen when I first got him. I am purposely feeding him a little less thinking it was the food decomposing.

Answers:

Algae! Make sure it is not in direct sunlight. Also household light makes algae grow. You can buy algae inhibitor at the pet store, just make sure you follow the directions exactly on the proportions because too much can harm the fish.

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they are very messy! i have some and i have also 2 bottom feeders, an algae eater and a very good filter

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to much light.like sun light

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IF YOU KEEP THE FISH BOWL WHERE IT GETS TOO MUCH HEAT OR SUN IT WILL ENCOURAGE ALGAE TO GROW FASTER. ALSO I AGREE YOU NEED TO GET AN ALGAE EATER.AND A FEW SNAILS.

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probably because of alage. if you have the bowl near a light or sunlight that can cause it. like that other person said it will be good to get a small alage eater in the tank. they also sell anti-alage tablets that you can put in the water to get rid of the alage but i wouldnt use that because i dont know how good it is for the fish

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The green is obviously algae. Maybe you should consider getting a snail or one of those sucker fishes to clean up the rest of the fish waste and algae build up. Plus make sure that the pH level in the water is right. That can have an effect also.

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well i would like to give you as much information as i could but,you did not explain what kind of tank you have but my guess is that your aquarium light is on too much, I hope this information has helped you .

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i would think it would be the food.

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depends on the water you use in our tap water there is algae so a day or 2 just sittin around it'll collect on the bowl and other stuff also the fishes messes he makes too is anoter cause and left over food that he didn't eat will get soggy and collect!

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its because of high nitrate levels that are caused by the fish poop you can get test strips at walmart that will tell you the nitrate and ph levels in the water