Frequently asked questions

Freshwater Care

How much sera floredepot is required for a 150 liter (33 US gal.) aquarium, and how long do the nutrients last?

Hello, the sera floredepot layer should be about 2 cm (0.8 in.) high.This would be about 8 liters (1.76 US gal.) or 13 kg (28.7 lb.) for an aquarium bottom area of 100 x 40 cm (39.4...

Freshwater Food

How much water change in a 60 cm (23.6 in.) aquarium / How much food for catfish?

Hello, feeding catfish this way (sera Catfish Chips are, for instance, well suited) is alright, if (!) there is enough periphyton (algae etc.) and wood for rasping off. However, the...

Freshwater Care

How often can I apply sera phosvec, and how quickly does the effect take place?

Hello, Concerning "re-dose":you can re-dose according to your requirements, i.e. after the cloudiness has deposited. Concerning "effect":it takes place even sooner - the cloudiness...

Freshwater Technical equipment

How often should I clean the filter media?

Hello, prefilter materials (in particular, filter wool!) should be regularly and thoroughly rinsed or replaced at the latest when they start to become clogged. Biologically  active...

Freshwater Fish

How old do Guppies get?

Hello, you can usually estimate 2 - 3 years. Best regards sera GmbHDr. Bodo Schnell

Freshwater Diseases

How should I dose sera baktopur when there are also healthy fish in the tank?

Hello, this is no problem. The fish may - as is the case with all treatments - feel slightly unwell, but will not be harmed. You should definitely add the proper dosage, as too low...

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