SKU: 35958365390

Sera Siporax Professional[Volume - 10L]

Sale price$374.85 Regular price$416.50
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Description

Sera Siporax Professional[Volume - 10L]Optimal Enhancement of Biological Filtration The innovative sera siporax Professional is designed for use in both freshwater and saltwater aquariums, as well as in ponds. Regardless of the type of filter (internal, external, or trickle filter), it maximizes the surface area essential for biological filtration and offers the perfect substrate for the establishment of beneficial filter bacteria. The filtration and decomposition processes occurring at

Optimal Enhancement of Biological Filtration


The innovative sera siporax Professional is designed for use in both freshwater and saltwater aquariums, as well as in ponds. Regardless of the type of filter (internal, external, or trickle filter), it maximizes the surface area essential for biological filtration and offers the perfect substrate for the establishment of beneficial filter bacteria.

The filtration and decomposition processes occurring at the bottom of natural waters are crucial. Micro-organisms break down organic waste, making it available as nutrients for aquatic plants, while removing harmful substances such as ammonium, nitrite, and nitrate. In nature, the amount of waste produced per volume of water is minimal, meaning the existing bottom surface can support a sufficient population of micro-organisms.

However, an aquarium represents a compact biotope within a limited space. Therefore, it is essential to maximize the settling area to ensure the thorough and safe decomposition of organic remnants.

sera has successfully achieved this with the exceptional high-performance filter medium, sera siporax.

In contrast to other filter rings on the market, sera siporax is made from sintered glass. This unique material features a special three-dimensional pore structure that significantly increases the surface area. Additionally, the fine pores create optimal conditions for the bacteria that degrade pollutants. As it forms an interconnected system, the bacteria are continuously flushed by water, enabling them to break down pollutants with maximum efficiency. Moreover, the distinctive pore arrangement allows for the self-cleaning of the substrate, resulting in very prolonged filter longevity.

When paired with specialized bacteria, sera siporax also accomplishes various other specific functions, such as preventing algae growth and facilitating targeted water conditioning.

Shipping Notes
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SKU: 35958365390

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4.9 ★★★★★
Based on 413 reviews
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Paige
Massapequa, US
★★★★★ 5
Definitely worth the price
Size: 6.5, Color: Black/Black
Absolutely love these boots! I originally bought them to wear in NYC in December & they did not disappoint. They were comfortable, cute, durable and worked well in the slush/snow. The traction on the bottom is also nice! They kept me warm with wool socks. I wear them almost daily now. Perfect for everyday. easy to wear with variety of outfits. Good every day shoe.
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Reviewed in the United States on January 3, 2026
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Verified Purchase
Kimberly
West Palm Beach, US
★★★★★ 5
Snagged a deal
Size: 7, Color: Redwood/Gum 10
I waited and waited to get these boots! I knew I was chancing it, but they went on sale, and I snagged them! I am a size 7, and they fit nicely with socks. a little loose, barefooted, but what psycho wears boots without socks? They are comfortable and really well-made.
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Reviewed in the United States on April 8, 2026
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ashlynnk
Waukegan, US
★★★★★ 4
Cute, comfortable waterproof boots (a little snug to put on)
Size: 7, Color: Velvet Tan/Gum 2
These are really cute Chelsea-style boots and feel very comfortable once they’re on. The waterproof material is great for wet weather and the sole feels sturdy with good traction. They look stylish enough to wear casually but still feel practical for rainy days. The only downside is they can be a little difficult to put on at first because the opening is somewhat snug, but once they’re on they fit well and feel supportive. Overall they’re a great waterproof boot and I’ve enjoyed wearing them.
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Reviewed in the United States on March 17, 2026
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Verified Purchase
Abby B
Lake Worth, US
★★★★★ 5
Surprisingly great for my wide feet and high instep!
Size: 10.5, Color: Velvet Tan/Gum 2
So thrilled I took a chance on these. Finding boots is impossible for me. I have wide feet, a super high instep, a bunion on one foot, and I wear a hard to find size (10.5). I ordered the 10.5 and 11 in these expecting I might need to size up for width (if I could even get them on). It was a struggle getting the 10.5s on the first time, and once I did they were somewhat uncomfortable on the top of my left foot. But I read that they would relax so decided to give it a go because I need waterproof boots for an upcoming trip and the 11s felt too long. After two days of light wear, they are already breaking in and I have no more discomfort. Getting them on is already easier and they are plenty wide enough and very comfortable to walk in. These are true to size. Super happy and worth a day of mild discomfort to break them in!
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Reviewed in the United States on March 7, 2026
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EE
Dallas, US
★★★★★ 5
Comfortable, sturdy, waterproof
Size: 9.5, Color: Black/Black
Loce, love, love these boots. Have walked ten miles with no foot pain around NYC. They go with everything and and are so comfortable. As they are waterproof/resistant, they get a little warm in high temps, but perfect three-season boots.
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Reviewed in the United States on May 17, 2026

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