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Quick breathing at the water surface is an unmistakable sign for an oxygen deficiency. Unfortunately, it may then already be too late for acting appropriately.

The sera O2-Test monitors the actual oxy

In combination with a heater thermostat, the sera bottom heater ensures water currents within the soil due to a temperature gradient (1 - 2°C difference between bottom and water temperature). This lea

vial the included suction cups.

The sera filter and feed pumps FP 100 and FP 150 are among the smallest aquarium pumps and are particularly well suited for nano aquariums. They can be applied in freshwater aquariums between 10 liters (2.6 US gal.) and approx. 50 liters (13 US gal.). Due to their small dimensions of less than 5 cm (2 in.) they fit into almost every internal filter.

The sera filter...

Versatile water conditioner that is quickly and safely effective against almost all pathogens occurring in freshwater. These include bacterial infections (e.g. Columnaris, Aeromonas, Pseudomonas, mouth and fin rot), infections by fungi (e.g. Saprolegnia), single celled skin parasites (e.g. Ichthyobodo (Costia), Ichthyophthirius, Chilodonella, Trichodina) as well as skin and gill flukes. The...

These powerful but at the same time energy saving external filters with an extensive accessory range are ready for connection and immediately biologically active. The filter baskets ensure an optimal

In combination with a heater thermostat, the sera bottom heater ensures water currents within the soil due to a temperature gradient (1 - 2°C difference between bottom and water temperature). This lea

Along with its equipment, this modern nano aquarium with bow front and a volume of 16 liters (4.2 US gal.) in total has been designed for permanently keeping shrimps or, for instance, a pair of Bettas

For approx. 390°dKH.

In case of too low KH values we recommend sera KH/pH-plus (in freshwater) or sera pond bio balance (in ponds), in case of too high values we recommend filtering through sera super peat (in freshwater aquariums).

In case of too low pH values we recommend sera KH/pH-plus (in freshwater aquariums) or sera pond bio balance (in ponds), in case of too high values in freshwater aquariums we recommend sera pH/KH-minus or filtering through sera super peat.

Water conditioner for the reliable and gentle removal of parasitic roundworms (nematodes) in freshwater and marine fish.

Nematodes such as Camallanus sp., Capillaria sp. and discus pinworms (Oxyuris sp.), can become a severe problem that often remains unnoticed for a long time especially in freshwater aquariums. Cichlids are particularly frequently infected.

Invertebrates such as shrimps and...

sera marin Gourmet Nori is the delicacy consisting of 100% gently dried Nori algae for aquarium animals such as algae eating fish, crustaceans and sea urchins.

The natural marine macro algae from unp

hydrochloride) obtained from cinchona bark, as an agent. The water conditioner can be used for treating white spot disease on freshwater and marine fish, and against other single celled skin parasites such as Ichthyobodo sp., Chilodonella sp. or Piscinoodinium pillulare in freshwater.Ornamental fish in marine water suffering from velvet disease can also be treated successfully with sera Phyto med...

concentration of both (the actual ammonia level can be calculated according to the pH value the using the included chart).

In case of acute danger, sera toxivec (freshwater) or sera pond toxivec (pond) provide help. sera bio nitrivec (freshwater), sera marin bio reefclear (marine water) or sera pond bio nitrivec (pond) actively counteract lasting enrichment of these substances.

Sufficient for...

sera blackwater aquatan with the Bio-Protect Formula conditions tap water to dark, clear, fish friendly freshwater just like in tropic waters.

The sera LED X-Change Tube cool daylight provides ideal daylight for freshwater and marine aquariums.

In freshwater aquariums with bluish fish, such as lake Malawi cichlids, neon tetras or rainbow fish, the bluish light of the LED tube lead to color enhancement, presenting the splendid colors of the fish in the best possible way.

The bluish daylight creates a deep water effect in marine aquariums...

Water conditioner effective against bacterial infections of freshwater and marine fish – even in advanced stages.

These include, for instance, Columnaris disease, fin rot, gill rot, Aeromonas or Pseudomonas bacteria, inflammations and open ulcers as well as dropsy.

 

Not for sale in the USA.

Silicate (SiO3) supports the growth of diatoms in marine and freshwater aquariums. The sera silicate-Test allows monitoring the silicate level reliably and easily.

Silicate levels above 1 mg/l (ppm) should be bound with sera marin silicate clear (fresh and marine water).

The easily digestible and particularly tasty food tablets for freshwater and marine fish quickly and safely combat bacterial infections such as bacterial dropsy (fish show symptoms such as slimy feces, bloated belly, protruding scales and bulging eyes). This special food must be fed exclusively until the fish have recovered entirely.

 

Not available in Germany and the UK.

Not for sale in the...

ead disease) and other single celled intestinal parasites. sera med Professional Flagellol is also effective against the pathogen that causes velvet disease (Piscinoodinium pillulare).For use in freshwater.

 

Not for sale in the USA.

Effectively combats infections by fungi (e.g. Saprolegnia) on fish and spawn in freshwater. The water conditioner can also be used in case of external injuries as well as against skin and gill flukes and Transversotrema.

Invertebrates do not tolerate the treatment.

Additional use of the care product sera ectopur supports effective treatment.

Too low water temperatures support the growth of fungi

spectrum lamp (reduced UV irradiation!) with color rendering index 1A (very good)

Also suitable as sole tube

Combination with the sera blue sky or the sera plant color is especially recommended for freshwater aquariums

Disinfects and supports recovery. Water conditioner for use in freshwater in case of typical bacterial disease such as Columnaris disease, fin rot, gill rot as well as infections by Aeromonas or Pseudomonas bacteria. The treatment can also be used in case of an infection by ectoparasites such as fish leeches, fish lice or parasitic crustaceans affecting the gills, as to prevent secondary...

For the quick and safe removal of harmful substances such as chlorine, chloramines and ammonium in freshwater and marine aquariums. sera chlor•ex conditions tap water to fish friendly, healthy  aquarium water. Allows adding fish already after 24 hours when combined with sera filter biostart (fresh water) or sera marin bio reefclear (marine water).sera chlor•ex does not affect the pH value.

Water conditioner for freshwater aquariums for the safe, quick and reliable removal of Ichthyophthirius multifiliis (pathogen causing white spot disease) and many other single celled skin parasites (e.g. Ichthyobodo, Apiosoma, Trichodina, Chilodonella) as well as infections by fungi. The product is colorless in water and therefore particularly well suited for using it in display aquariums and...

however, provides nutrition for unwanted algae.

The sera PO4-Test quickly and easily provides an overview of current phosphate levels. Excess phosphate is easy to remove with sera phosvec･clear (freshwater) or sera phosvec Granulat (fresh and marine water) or sera pond phosvec (pond).

Sufficient for approx. 60 measurements.

Unlike common filter wool, the filter balls keep their shape and can be washed out several times. They are 80% reusable after washing out. The high performance filter medium is suitable for both freshwater and marine aquariums and all filter types. The biological filter medium sera siporax Professional is the perfect addition to sera crystal clear Professional.

X-Change Tube daylight sunrise creates true-color, natural daylight. The tropical light with a Color Rendering Index of around 90 represents natural sunlight and is thus suited as LED lighting for all freshwater aquariums. The bright LEDs optimally light the aquarium without altering the natural colors. Combination with the sera LED Digital Dimmer allows adjusting the brightness or the light...

from Thymus vulgaris L., Thymus zygis L. as an agent for treating bacterial skin inflammations caused by Aeromonas, Pseudomonas or Vibrio bacteria as well as fin and gill rot on ornamental fish in freshwater aquarium and in ponds.

A safe diagnosis of an external bacterial infection can be obtained by a microscopic examination of skin or gill swabs.

sera Phyto med Baktazid is characterized by its...

the water in case of insufficient biological filtration.

The sera NO2-Test allows monitoring the nitrite level in fresh and marine water easily and reliably.

We recommend using sera bio nitrivec (freshwater), sera marin bio reefclear (marine water) or sera pond bio nitrivec (pond) in case of slightly elevated nitrite levels. In case of severe nitrite problems, sera Nitrite-minus quickly provide...

Silicate supports the growth of diatoms in freshwater and marine aquariums. sera marin silicate clear easily and permanently binds silicate.

sera marin silicate clear is delivered with a practical filter media bag. Briefly rinse with running water before use, then simply place in a filter or a place with good water circulation. Remains active up to three months, depending on the silicate level....

The carbonate hardness (KH) is one of the most important water parameters in an aquarium.

A majority of the fish species kept in freshwater aquariums refers relatively hard water. Furthermore, the KH serves as a buffer that prevents dangerous pH value variations (among others, rapidly sinking pH value).

The KH should be kept at least at 6°dKH for all community tanks as a basic rule (considerably

The sera Rock Hole Stone is a classic hole rock that is in particular being used in many "Africa" theme freshwater aquariums (e.g. lakes Malawi or Tanganyika). Its name already tells its most obvious property: the holey surface with many cavities and furrows. The holes do not only provide plenty of space for great planting, for instance with Anubias, Java fern or Bolbitis, but also nice hideaways...

and can be flexibly used. It is suitable both as a hang-on skimmer and in a filter underneath the aquarium (sump). It is therefore optimally suitable for all aquarists that wish to switch over from freshwater aquariums to marine water aquariums. The larger sera marin Protein Skimmer 600 S for aquarium cabinet filters (filter sumps) is easy to use and suitable for aquariums up to 600 liters (159 US...

and can be flexibly used. It is suitable both as a hang-on skimmer and in a filter underneath the aquarium (sump). It is therefore optimally suitable for all aquarists that wish to switch over from freshwater aquariums to marine water aquariums. The larger sera marin Protein Skimmer 600 S for aquarium cabinet filters (filter sumps) is easy to use and suitable for aquariums up to 600 liters (159 US...

and can be flexibly used. It is suitable both as a hang-on skimmer and in a filter underneath the aquarium (sump). It is therefore optimally suitable for all aquarists that wish to switch over from freshwater aquariums to marine water aquariums. The larger sera marin Protein Skimmer 600 S for aquarium cabinet filters (filter sumps) is easy to use and suitable for aquariums up to 600 liters (159 US...

The original sera siporax Professional is suitable for use in both freshwater and marine aquariums as well as in ponds. Not depending on the kind of filter (internal/external/trickle filter), it maximizes the surface required for biological purification and provides the optimal substrate for the settling of necessary filter bacteria.

Filter and breakdown processes in the bottom ground of natural...

The very bright, neutral white light provides plenty of luminous flux also in deep aquariums, increases the contrast impression and is excellently suited for lighting the foreground. The LED X-Change

Lighting is particularly important especially in aquariums with plenty of aquatic plants, such as aquascapes or Dutch style aquariums. The plants grow evenly and attractively only if the light is opti

The blue, actinic light is ideal for providing endosymbiotic algae in soft and stony corals as well as other invertebrates. Since the emitted blue spectrum of the LEDs has been expanded by using two d

sera Gravel Anthracite is CO2 proof and neutral towards water, i.e. it has no influence on water parameters and does not tint the water. Due to a grain size of 1 - 3 mm, plants can grow

sera Gravel Beige is CO2 proof and neutral towards water, i.e. it has no influence on water parameters and does not tint the water. Due to a grain size of 2 - 4 mm, plants can grow on e

sera Gravel Black is CO2 proof and neutral towards water, i.e. it has no influence on water parameters and does not tint the water. Due to a grain size of 2 - 3 mm, plants can grow on e

sera Gravel Blue is CO2 proof and neutral towards water, i.e. it has no influence on water parameters and does not tint the water. Due to a grain size of 2 - 3 mm, plants can grow on ex

sera Gravel Brown is CO2 proof and neutral towards water, i.e. it has no influence on water parameters and does not tint the water. It consists of ground lava rock, and provides ideal space for settli

sera Gravel Gray is CO2 proof and neutral towards water, i.e. it has no influence on water parameters and does not tint the water. Due to a grain size of 2 - 3 mm, plants can grow on ex

sera Gravel Ocher is CO2 proof and neutral towards water, i.e. it has no influence on water parameters and does not tint the water. Due to a grain size of 0 - 2 mm, plants can grow on e

sera Gravel White is CO2 proof and neutral towards water, i.e. it has no influence on water parameters and does not tint the water. Due to a grain size of 1 - 3 mm, plants can grow on e