Why Is My Tank Green

[chinadoll]

I have a round bubble type tank. and recently it is just turning green (water) i have changed the water 3 times in a week and within a day the water is green again. the filter looks like its working ok. can anyone help please? im a new fish keeper. i have had no problems until now

 

[jarmado]

might be too much light?

 

[Bloo]

I take it this type of bowl doesn't come with lights. So does it get direct sunlight ? That may be the problem.

 

[chinadoll]

I take it this type of bowl doesn't come with lights. So does it get direct sunlight ? That may be the problem.

no i does come with alight which i was switching on a night. i have had the tank up and running for about 5 months but its only the last 2 weeks i have had this problem. i thought it was real plants so took them out and put plastic in. BUT no it is still turning the water green.

 

[Bloo]

You mean you leave it on overnight ? Not a good idea - fish need their rest too. If you mean just a few hours in the evening before going to bed, that shouldn't really cause this problem.
You could try adding some phosphate remover to your filter and see if that helps. And reduce the amount of hours the tank is lit.

 

[chinadoll]

You mean you leave it on overnight ? Not a good idea - fish need their rest too. If you mean just a few hours in the evening before going to bed, that shouldn't really cause this problem.
You could try adding some phosphate remover to your filter and see if that helps. And reduce the amount of hours the tank is lit.

Thanks i will give that a go. i just cant understand why the water turns misty and green within hours of cleaning it, when its been really good for the last 5 months?