Yellow water

[ingo_1978]

I have 3 fancy goldfish (two 5" and one 2") in a 30g tank with an interpet 2204 internal filter.

The water however in the space of a week turns a yellow colour and I am having the do nearly a full water change weekly to get it clear again. The ammonia, nitrite and nitrates test ok.

Does anyone know what's causing the yellow colour? The tank is near a window, could the light be affecting it or should I invest in a bigger filter, perhaps an external one?

 

[WILDER]

If it's near a window you will get alot of algae problems, how many gallons an hour does the filter pull through, and i clean m y goldfish tanks twice a week, as they are messy.

 

[WILDER]

Found this, not the writer of the article.
Yellow water
Name given to water with a slight yellow tinge. Can be caused by too much organic material in the water or to show that a water change is needed. Eliminated through carbon filtration and better water management.

 

[black angel]

also, do you have any bogwood in the tank?

 

[ingo_1978]

No bogwood.

I'm not sure what the litres per hour are... anyway picked up a clearseal 1000L/hour filter for £10 brand new on ebay and gonna stick that in to help.

 

[black angel]

i have the same filter and got it from ebay too. its a great little filter and hopefully it will help.
do you have carbon in the other filter?

 

[ingo_1978]

Yes, I've also taken a rock ornament which is yellowish orange marbled colour which may be dissolving and dis-colouring the water. I had it sat on the bubblestream which my dissolving it quicker.