Frequently asked questions

Freshwater Fish

Discus and Altum angelfish together?

Hello, this is indeed possible with juvenile or half grown fish if you leave out the shrimps (which would otherwise end up as fish food sooner or later). But with the remaining stock...

Freshwater Care Technical equipment

Divide sera CO2-Tabs into pieces?

Hello, this is not really necessary since the diffusion reactor itself ensures even distribution. However, there is nothing to say against it either - so if you prefer this method:...

Freshwater Care Fish

Do Otocinclus (Midget Sucker Catfish) damage plants?

Hello, no, healthy plant leaves will not be damaged. Only already damaged, softened plant parts will be nibbled at, if at all. In any case, the Midget Sucker Catfish require a...

Freshwater Fish

Do different Corydoras species cross-breed?

Hello, there have indeed been reports about hybridizations of that kind. It is therefore advisable to keep just one Corydoras species per aquarium as to maintain pure species. If...

Freshwater Care

Does hornwort not grow roots?

Hello, it will grow roots after a few days if you plant it into the bottom gravel. However, these are small and in no way comparable to those of an Echinodorus, Vallisneria etc. The...

Freshwater Care Diseases

Fish become ill / Root smells bad

Hello, Concerning "reoccurring disease":frequently reoccurring disease outbreaks almost always indicate a water problem - unsuitable values (e.g. too hard) or increased water...

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