conniepatton said:
Help!!! :help: I have had my goldfish tank now for over a year and suddenly whenever I change the water in it, it wont take long and it will get cloudy. I have 4 Golfish in a about 40 gallon tank. Feed in the morning and at night. sometimes only once a day. What can cause this milky water? :huh: It gets to the point that you cant see the fish anymore.
Plus one of them looks like is getting a white spot on his head.
Connie,
That tank is too small for 4 goldfish. You need 30 gallons for 1 goldfish, plus 15 gallons for each additional goldfish. That means that you need a tank that is at least 75 gallons to support those four fish.
Goldfish produce a LOT of waste and their tanks need to be double filtered. This means that your 40 gallon, for 1 goldfish, needs a filter capable of processing water from an 80 gallon tank. A 75 gallon would need a filter for a 150 gallon tank.
I suggest that you either upgrade to a 75 gallon tank and double filter, or get a 45 gallon tank, double filtered, for two of the fish.
In your 40 gallon, they are cramped for space and it is compromising their health. As your fish get larger and older, they will produce more and more waste material. The only way to deal with that is to:
a) double filter the tank
b) do more frequent and larger water changes
but those are not going to be the answer in the long run. Unless something is done to change the situation, your fishes' health will suffer. The white spot is most likely the start of that.
Goldfish can live 20 years or more if they are kept in an adequate environment.
Until you can get a larger tank or another one, I suggest you test your water for ammonia, nitrites and nitrates. Use liquids, not strip tests. Post your results here, along with your normal water change routine. Do one of your "normal" sized changes immediately.
We can advise once we find out what kind of condition the water is in.
Roan