Frequently asked questions

Freshwater Diseases

Betta has no upper lip

Hello, this can be due to a disease (was there possibly any kind of skin slime visible?) or an injury. If it was that way from the beginning, a misshaping (e.g. by mineral of...

Freshwater Care

Can the carbonate hardness be higher than the total hardness?

Hello, the reason for this difference is as follows:From a "chemica"' viewpoint, the total hardness ist the total amount of bivalent metal ions. In practical aquarium terms, this can...

Freshwater Fish

Can currents also be too strong?

Hello, yes, this is indeed possible, especially with fish that are not good and powerful swimmers (all veiltail breeding forms, among others)! Water current should by all means be...

Freshwater Care

Can an aquarium be planted too densely?

Hello, this is virtually impossible, provided the fish have sufficient space left to move! It is important to fulfill the nutritional requirements in very densely planted tanks....

Freshwater Care Fish

Is it possible that no elevated nitrite levels can be detected a few days after a nitrite intoxication?

Hello, yes, this is indeed possible. Dangerously high nitrite levels become lower again after a couple of days unless there are no chemicals in the water that inhibit bacteria. The...

Marine water

Can I also use tap water for preparing saltwater?

Hello, Concerning "R/O water/tap water":water completely deionized by reverse osmosis (R/O) or ion exchange is virtually free from potentially harmful substances, which cannot be...

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