Frequently asked questions

Freshwater Fish

Fish stock questions for a 190 liter aquarium

Hello, 4 Ancistrus catfish2 are sufficient - better only add fish of the same gender if you do not have takers for the very numerous babies! 3 Port Hoplosgrowing to almost 20 cm,...

Freshwater Fish

Fish stock with Neon Tetras and catfish in a 60 cm aquarium

Hello, one group (8 - 12 specimens) each of Neon Tetras and a small Corydoras species, plus possibly a group of Midget Sucker Catfish (Otocinclus and related genera) is sufficient in...

Freshwater Technical equipment

Fluorescent tube does not work when switching it on

Hello, please check whether the lamp and the starter sit in their fixtures correctly − you may slightly turn the lamp to do so. It happens rather often that the lamp sits poorly due...

Freshwater Technical equipment

Forgot to switch the filter back on after feeding

Hello, these were rather certainly bacteria and other protein metabolizing micro organisms (so-called infusoria) that were not drawn into the filter (where the organic matter would...

Freshwater Fish

Gender differences and fin filaments in angelfish

Hello, after all, there is only one really certain distinguishing characteristic (unless you could watch the fish while mating and thus know which one is male and which one is...

Freshwater

Gluing rocks and decoration with silicone

Hello, lava is not really the best choice for an aquarium: the material is rough, has sharp edges and bears high risk of injuries for fish, e.g. in case they are frightened and crash...

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