Frequently asked questions

Freshwater Care

Raising the pH value while lowering the hardness at the same time

Hello, deionization with a reverse osmosis (R/O) or ion exchange system is recommended in this case. You can then adjust the desired total hardness with sera mineral salt, the KH...

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Freshwater Care

Using sera aquatan if water changes are conducted without a bucket

Hello, there is a very simple solution:distribute the corresponding conditioner amount after having removed the "old" water, then top up with fresh water. This will always protect...

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Freshwater Care

UV protection foil for algae prevention?

Hello, I am sceptical, because glass itself already absorbs most of the UV. If the aquarium (and not heat etc.) is the main reason for the protection, you could also cover the...

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Freshwater Care

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...

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Freshwater Care

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...

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Freshwater Care

What is the best way to attach moss to a root?

Hello, this is only for a while - you can remove (cut and pull it out) the thread after a few weeks when the moss has grown on! I do not think there will be any problems if you...

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