SKU: 99691349191

Sera Siporax Professional - Biological Filtration

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Description

Sera Siporax Professional - Biological FiltrationSera Siporax Professional Biological Filtration Maximum optimization of biological filtration 1 Litre contains 270m2 of Bacteria growing surfaces! 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

Sera Siporax Professional - Biological Filtration

Maximum optimization of biological filtration 

1 Litre contains 270m2 of Bacteria growing surfaces!

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 waters are very important. Organic waste are processed by micro-organisms and are thus available for the natural cycle as a nutrient for aquatic plants – pollutants such as ammonium, nitrite and nitrate are removed. Since little waste per water amount is formed in nature, the present bottom surface is sufficient for housing a sufficient number of micro-organisms.
However, an aquarium accommodates a small biotope in little space. It is therefore necessary to maximally enlarge the settling area for ensuring complete and safe breakdown of organic remainders.
sera perfectly put this into practice with the unique high performance filter medium sera siporax.

Unlike other filter rings available on the market, sera siporax consists of sintered glass. The unique material convinces due to a special three-dimensional pore structure. This allows maximum surface increase. At the same time, the fine pores provide ideal settling conditions for bacteria that break down pollutants. Since it is an interconnected system, the bacteria are permanently rinsed by water nd so can break down pollutants with best possible efficiency. Furthermore, the unique pore array allows for self-purification of the substrate and thus very long filter holding times.
In combination with specialized bacteria, sera siporax even fulfills a variety of other special tasks, such as algae prevention or directed water conditioning.

sera siporax was developed on the basis of water biological studies. It is based on the pore structure of the nitrifying layers in the natural aquatic soil. The manufacturing process and the structure have been patented worldwide.

According to university studies, one litre of this natural aquatic soil layer has about 270 m² of usable bacterial surface. This layer has a thickness of 1.5 to 2 mm and consists of sand and mud particles. sera siporax is ideally modelled on this soil. Each individual ring offers the bacteria about 1m² of colonizable inner and outer surface.

The pore structure of sera siporax is open-pored and three-dimensionally cross-linked. This structure enables the formation of very efficient biofilms that grow into the pores and line their walls. The pores have the ideal size to leave enough space to guarantee a long-term water flow and the supply of bacteria. In the depth of the pore structure, where the oxygen content decreases, the biofilm also decomposes nitrate (denitrification). sera siporax has the optimal pore structure for nitrate decomposition.

In the biofilm of sera siporax not only nitrifying and denitrifying bacteria grow, but also organic substance degrading bacteria. As a result, dying bacteria do not clog the pores but are biologically degraded. The biofilm grows and shrinks with the load of the water and thus adapts to the demand. sera siporax is thus the only biologically self-cleaning filter material. The pore structure is perfect for bacterial colonisation.

Due to the special pore structure, sera siporax develops its own ideal water flow in the pore structure. This means that it can be used independently of the external flow velocity. It can therefore be used in fast, slow and trickle filters.

Many competitors advertise with larger surfaces between 400 and 800 m² per litre. However, all filter media with a larger surface area have smaller pores. Smaller pores cannot be colonized by a biofilm because the bacterial film fills the small pores and blocks the water flow. The bacteria soon die due to lack of oxygen and nutrients and the medium is only active on the outer surface. Measurements show that the filter performance decreases drastically within four weeks. With siporax, the degradation performance still increases after four weeks.

For the reasons mentioned above, there is currently no filter medium that comes close to the degradation performance of sera siporax.

One litre of sera siporax has the same degradation capacity as 34 litres of ceramic or clay filter medium, making it the cheapest filter medium on the market. All other filter bodies are much more expensive than a litre of sera siporax in terms of the usable surface.

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SKU: 99691349191

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eeeggg
Cuba, US
★★★★★ 4
I believe equal to name brand rhyming with NitroGina
I believe it is equal to the name brand mentioned on the front side of the tube. It is 55 SPF Sun Protection Factor so it offers strong UV A and UV B protection which are the 2 ranges of sun rays that do the skin damage and burning. It is an easily absorbed lotion that when rubbed goes into the skin and is not visible. It feels good after being rubbed in in that it feels dry and not overly greasy or with no shine and sheen. If you put on a shirt over your skin with lotion it will appear on the inside of a dark shirt but it will wash out right away when that shirt is washed. It is a good product and offers burn protection to me in some clear-sky strong sun uses. Reapply after entering the pool or after an hour (all sunscreen labels say reapply after 80 minutes which I believe is per recommendations of the federal FDA or some medical studies). I reapply often and I still get tanned but I do not want to burn.
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Reviewed in the United States on July 10, 2025
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Ragdollyanna
San Leandro, US
★★★★★ 5
Super impressed by this!
Love this sunscreen and will be reordering it. It’s sheer, light, invisible, gives me the protection I need for my middle aged skin and I can swear my complexion has gotten better since I started using it. I’m super impressed how it’s comparable to more expensive brands in quality without the high price tag. It’s made me start looking into other skin products I can purchase from the Amazon brand.
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Reviewed in the United States on February 3, 2026
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jmatthie
Charlottesville, US
★★★★★ 5
How is this SO good?
I'm a sunscreen enthusiast. I wear sunscreen every day, and I know how hard it is to find one that is actually pleasant to use. It goes on like a white paste but it quickly blends in to the skin and becomes invisible. There is NO white cast after you rub it in. The initial white color makes it really easy to see where you have applied it. The lotion is very moisturizing but it's also fairly lightweight feeling, and isn't greasy. My skin is usually on the dry side. The smell is nice and neutral, some people might say that it has a bit of a "sunscreen" smell. But the smell is pretty faint and it doesn't linger. I find it to be pleasant, personally. Additionally, I have used this in the water and I find it to offer excellent water resistance even though it doesn't form a heavy-feeling layer on the skin. This is particularly impressive to me. This sunscreen will definitely be a go-to for beach days. It's great for face and body! The one caveat is that it tastes terrible if you get it in your mouth. So I definitely do not recommend eating it, lol. You might have this issue if you're particularly sweaty and the sweat drips down your face. In my experience many sunscreens do this, so I don't consider it to be a big deal. I'd recommend this for anyone looking for cost-effective and lightweight sun protection. It's great on face and body.
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Reviewed in the United States on July 19, 2021
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Armando
Draper, US
★★★★★ 5
Good product
It’s very comparable to the Neutrogena version. Its light on my face, does not leave a white cast, and doesn’t break me out. The price point is excellent compared to the name brand one. I go walking almost everyday and live in a sunny and hot area where the climate is hot all year round. I haven’t gotten burnt since wearing this sunscreen. Definitely recommend *UPDATE* This sunscreen gave me acne. I rarely breakout and I now have five pimples on my face. I do not recommend!!!
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Reviewed in the United States on November 14, 2024
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mamacholina
Lake Worth, US
★★★★★ 3
Burns My Eyes
If your eyes have a sensitivity to sunscreen, they may have a sensitivity to this one. This product made my eyes burn for two days, with multiple washings. I have had problems with La Roche Posay sunscreen — if that is a helpful association. It has dimethicone —a silicone— in it (which might be the irritant). Its common in beauty products but some people avoid it for various reasons. If you have no sensitivities and don’t mind the silicone, then it could be an acceptable option for the value. It went on smooth and light, left no cast, and had a very mild scent. I will use it on my limbs, but I can’t use this on my face.
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Reviewed in the United States on September 15, 2023

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