Can I keep aquarium fish in a pond during summer?
Hello, plants growing up to the surface (floating plants and/or plants that reach the surface) should be present especially near the banks as to provide shelter (also from birds!). ...
Frequently asked questions
Does a UVC clarifier harm useful bacteria?
Hello, all bacteria dwelling in open water and thus being carried past the UV light will be killed. Therefore, filter bacteria are usually not affected since they settle in the...
How can I hibernate goldfish living in a pond indoors?
Hello, goldfish can hibernate in cold (4 - 6°C / 39 - 43 °F) water (in that case do not feed nor disturb them) Usually, temperatures inside the house (including the basement) are...
Severe infection of goldfish
Hello, this sounds like a severe parasitic infection, which is mostly caused/triggered by water problems (e.g. organic pollutants, nitrite). However, a proper diagnosis is,...
Total hardness for keeping Koi
Hello, no, not at all. The common pond fish (Koi, goldfish, orfes, sturgeons etc.) can also be kept in hard water without any problems. A connection between hardness and coloration...
Treating fin rot in a Koi
Hello, sera pond cyprinopur is suitable in this case, if it is only a bacterial infection. Good water hygiene is also very important. The treatment can be carried out directly in...