We followed the directions, and then the next day two fish died. If the tank is large enough with a filter suited for goldfish then the outflow of the filter should be enough to allow for gas exchange. There's approx 40 fish in total but they are quite big. It sounds like something about your water is toxic to them, either lack of oxygen worse at the bottom so worse for these bottom dwellersor some chemical be that part of the nitrogen cycle or the ph. Obviously I know now that there are too many fish but the company that sold me the system said !!! It can also cause large fluctuations in water chemistry which is detrimental to fish health. Any recomendations for a good air pump?
Their isn't enough oxygen in the water.
Why is my gold fish sucking air from the top of the tank?
This has been like this for maybe a week and half. Oct 9, Messages: It can also cause large fluctuations in water chemistry which is detrimental to fish health. Answer Questions Why might one hermit crab latch onto another? If they had been honest in the first place it would have saved me a lot of trouble and for the welfare of the fish! Why do my gold fish? Bad bacteria white cloud bloom or green water algae can also take up space In order for water to be free, it must be properly agitated.