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I have yellow water in my sons fish tank. How do I improve the water quality?
My son has two fish in a smallish tank, I do not overfeed them, have put in a new filter and carry out regular weekly partial water changes yet the water is always deep yellow in colour, why? The fish seem to be ok but it doesnt look attractive and cant be doing them much good. My son does have a night light and the tank is in his room, could it be too much light? Can any body help?
For the record, her son is not peeing in the tank. Urine contains mostly salt, which in itself would likely kill the fish. Furthermore, it contains a high level of ammonia, which would also kill the fish. Although I have heard of advanced aquarists using urine as a cheap (but effective) fertilizer in heavily planted tanks because of its high nitrogen content, that is clearly not the problem in her case because without plants to absorb it it would kill the fish long before it left such a distinctive colour.
In addition to the protein answer, which is plausable, your problem could stem from tannins in the water. Do you have any driftwood in the tank? The gravel could be releasing tannins too, you must always be sure that the package says "does not stain aquarium water."
Once again, the best way to remove tannins is to add carbon to the filter! Even if you already have it, it needs to be replaced every two weeks or so, because it gets clogged fast and is quickly rendered useless.
Bon Chance!
Liszie
Deep Fried Catfish By: Chef Gason "Yellow Cornmeal" Lodge Logic Deep Fryer