Frequently asked questions

Freshwater Diseases

Neon disease

Hello, some other characin species can also be infected with neon disease (caused by sporozoans of the species Pleistophora - you can also find the spelling Plistophora in literature...

Freshwater Diseases

Neon tetra floats helplessly at the surface

Hello, this is one of several possibilities which would, hoverer, require a longer case history (loss of appetite, no feces for a longer while, etc.). Possible other causes are: ...

Freshwater Fish

Neon tetras, butterfly cichlids and shrimps together? / Filter media

Hello, Concerning "desired stock":this is indeed possible, but you should add a considerably larger group of the shrimps (see below). An 80 cm tank would be even better for the above...

Freshwater Care

Newly added plants turn yellow / Leaves decompose

Hello, this is absolutely normal with many plants - they also need to adapt. Especially the species with large leaves (e.g. Echinodorus spp., Anubias spp.) are originally swamp...

Freshwater Fish

Newly added Cardinal Tetras are pale

Hello, Concerning"pale Cardinals/blackwater aquarium":this is indeed possible, and it can also simply be due to fright when transferring them. This should then become better in two...


Setting up an aquarium anew while it is in operation

Hello, the water does ideally not contain too many bacteria - these are supposed to dwell in the filter! I recommend placing the filter media in a bucket with aquarium water during...

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