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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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...
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...
What are the consequences of very high silicate levels?
Hello, high silicate levels indeed support diatom growth, but that's it. Silicate is not toxic and does not have any other (i.e. besides supporting diatom growth) harmful effects in...
What can I do about elevated nitrite levels (nitrite peak)?
Hello, using sera toxivec plus very generuous partial water changes - however without filter "cleaning" - are recommended as immediate measures. The so-called nitrite peak will then...
What can I use to treat fungal infections when there are shrimps in the tank?
Hello, sera omnipur can be used in such cases since it is copper free. sera mycopur, however, is not tolerated by shrimps due to its - albeit low - copper contents. Best regards se...