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Eau douce Invertébrés

Snails multiply too quickly

Hello, possible reasons also include live food or a latent presence that has caused rapid mass multiplication due to some factor, such as accidental overfeeding or a dead fish not...

Eau douce Poissons

Shell dwelling cichlids have become more aggressive

Hello, rocks are not the best choice in this case. I recommend plenty of empty snail shells plus bottom ground consisting of fine sand sufficiently thick to allow the fish to dig in...

Eau douce Soins

Quick or slow water flow in the filter?

Hello, in fact, a cross of the two would be optimal. In case of high nitrate pollution, this can be achieved by a combination of a conventional "biofilter" (typically with flow...

Eau douce Soins

Black algae in a goldfish aquarium

Hello, the pustules and threads are probably black spot and/or beard/brush algae, which biologically belong to the red algae. In this case it is advisable to lower the phosphate and...

Eau douce Maladies

Black fin edges after a fin rot treatment

Hello, this kind of black edge sometimes occurs after a successfully treated bacterial infection - it usually heals more or less completely. No further treatment is required if there...

Eau douce Bassin Maladies

Severe infection of goldfish

Hello, this sounds like a severe parasitic infection, which is mostly caused/triggered by water problems (e.g. organic pollutants, nitrite). However, a proper diagnosis is,...

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