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Γλυκό νερό Ψάρι

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...

Γλυκό νερό Φροντίδα

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...

Γλυκό νερό Τεχνικός εξοπλισμός

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...

Γλυκό νερό Φροντίδα

Nitrite level remains very high for months

Hello, something is wrong with the filter if the nitrite level is still that high! The biological performance of internal and external filters is the same, provided the filters are...

Γλυκό νερό Φροντίδα

Nitrite levels remains at 0.3 mg/l for a longer time

Hello, the nitrite peak may indeed occur or be present later than after 4 weeks. Using a really highly active filter medium (sera siporax Professional) and a biostarter (sera bio...

Γλυκό νερό Τροφή

No water changes while being away for three weeks? / Preparing food for vacation substitute

Hello, yes, this is possible if basically everything is alright (no diseases, fish well conditioned, no basic fish stock or water problems). One more tip for the "holiday...

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