Frequently asked questions

Freshwater Diseases

Veiltail goldfish swim upside down

Hello, according to the description, my guess is a bacterial swim bladder infection that may be treated with sera baktopur direct or sera bakto Tabs, at least in early stages. Comba...

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Freshwater Technical equipment

Water becomes cloudy after a water change

Hello, it sounds as if many (basically beneficial!) bacteria (= milky cloudiness) are swirled up from the bottom gravel during the water change and simply require some time for...

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Freshwater Diseases

Water change after/during a sera costapur treatment

Hello, Concerning "partial wate change":In such a situation, you should wait for about 3 days after the last symptoms have vanished before carrying out a partial water change....

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Freshwater

Water change rate and filter cleaning

Hello, Concerning "cleaning the filter media":this is alright if it considers only the prefilter media! However it is necessary only when these are clogged so densely that the water...

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Freshwater

Water cloudiness and bottom ground mix-up

Hello, yes, the cloudiness will settle after a few days or is by and by trapped by the filter −  possibly you will need to wash out the prefilter materials if they get clogged.You...

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Freshwater

Water smells bad

Hello, it is important to act without delay, because the unpleasantly smelling gases are very toxic for the fish! In case coarse gravel is used as bottom material, it is helpful if...

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