Frequently asked questions

Freshwater Diseases

How to carry out a treatment against gill flukes

Hello, first signs of improvement can usually be seen after 2 - 5 days, depending on how severe the infestation is. Complete recovery may take up to 2 weeks, the main part of which...

Freshwater Technical equipment

How to change the filter felt of a sera air membrane pump

Hello, the rubber stopper is only plugged in and can be lifted with a little screwdriver (or the like). It works in the same way for the smallest model (sera air 110 plus) of the...

Freshwater Care

How to decolorize a water sample

Hello, you first need to take a water sample a bit larger than you actually need for the test. Then decolorize this sample by adding active carbon pellets one by one. Stir after each...

Freshwater Diseases

How to proceed in case of a repeated treatment with sera mycopur?

Hello, in this case you can and should repeat the treatment after a water change of about 50%. Best regards sera GmbHDr. Bodo Schnell

Freshwater Care

Increasing the hardness of R/O water for Central American fish

Hello, I recommend increasing the hardness with sera mineral salt to approximately 6 - 8°dKH and, accordingly, approximately 13 - 17°dGH, unless the fish originate from water...

Freshwater Care

Is it normal that new plants discard leaves? / Is it necessary to remove rock wool?

Hello, Concerning "discard their leaves":this is indeed rather common. Quite a number of plants is grown emersed in the nurseries, i.e. with their leaves in the air (only the roots...

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