Raising goldfish can change water several times a day without an air pump Is that kind of common round shaped fish tank, because there is no air pump, afraid of goldfish hang up, please change the water a few days?
If that is the cylinder type small best 2 days water for the best water in the sun after more than 3 days plus the circular tank within a short period of time a long time under the goldfish can also raise the basic difficult to keep live
Look at the water quality, anyway, you change it every 3 days or so, do not change the light at one time.
Water will change to control the feeding goldfish, can eat, can pull the water dirty easily, when changing the water to the upper left under the clean water, dirty change, pay attention to the new water exchange to the sun, I usually have a general water storage basin specially prepared.
