Frequently asked questions

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...

Freshwater

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...

Freshwater Fish

New gourami attacks older ones

Hello, this raises the suspicion that it possibly is not a female but a juvenile male! In case of open injuries, a mild anti-bacterial treatment (liquid sera baktopur) makes sense...

Freshwater Technical equipment

Nitrate breakdown with sera siporax: What kind of filter is suitable?

Hello, an external filter is possible. The filter type isn't that important - both internal and external setups will work just fine. The setup is pretty simple: the first step is...

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