Frequently asked questions


Sand and gravel in combination? / How much sand is required?

Hello, Concerning "sand and gravel":a small sand zone is not of much use, and the sand would literally sink into the gravel within shortest time. Also, the Coolie loaches require a...

Freshwater Diseases

sera baktopur: Application tips

Hello, Concerning "shortness of breath":No, shortness of breath is rather caused by quite a number of bacteria that also affect the gills (bacterial gill rot), and consequently...

Freshwater Diseases

sera baktopur: Treatment duration

Hello, at first, the treatment should be carried out as described in the instructions for use, i.e. addition on the first and third days. It depends on different factors, such as...

Freshwater Diseases

sera ectopur: Application and tolerance

Hello, sera ectopur is even more effective than common salt:it is a further development of the well known salt therapy that supoorts it by substances that release oxygen. It is well...

Freshwater Technical equipment

seramic calibration: Can you use pH 4 instead of pH 9?

Hello, no, the unit must be calibrated with the pH 9.2 solution mentioned in the instruction. Calibrations with solutions other than the mentioned ones will either not be possible at...


Setting up a low-current tank for gouramis

Hello, Concerning "pond soil":I generally do not recommend using soil, including pond soil, in aquariums.Some kinds of soil are very rich in nutrients (however, this rather applies...

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