SKU: 65785876757

De-nitrate 500 ml

Sale price$39.43 Regular price$43.81
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Ships within 48 hours · Estimated delivery Sep 10 - Sep 15

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Description

De-nitrate 500 mlDe nitrate is an affordable, natural, and porous material designed with a specific pore distribution and geometry that facilitates aerobic nitrification at shallow depths and anaerobic denitrification in the center. This material boasts a large surface area, allowing for a dense population of beneficial bacteria. While de nitrate can capture nitrates, similar to other nitrate absorbing substances like certain zeolites and synthetic resins, its

De-nitrate is an affordable, natural, and porous material designed with a specific pore distribution and geometry that facilitates aerobic nitrification at shallow depths and anaerobic denitrification in the center. This material boasts a large surface area, allowing for a dense population of beneficial bacteria. While de-nitrate can capture nitrates, similar to other nitrate-absorbing substances like certain zeolites and synthetic resins, its capacity is somewhat limited, with anaerobic processes being the primary means of nitrate elimination.


KEY FEATURES:

  • Eliminates nitrates, nitrites, ammonia, and organic matter
  • Highly porous biological medium
  • Pore dimensions ideal for anaerobic bacteria
  • No risk of hydrogen sulfide formation as seen with sulfur-based media

DIRECTIONS:
To achieve optimal performance, de-nitrate should be positioned to ensure water flows through it effectively, such as in a canister filter, chemical filtration module, or box filter. The flow rate should not exceed 200L (50 US gallons) per hour.


Expires on 13 Jan 2031
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Exchange/Return Notes
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SKU: 65785876757

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4.5 ★★★★★
Based on 11 reviews
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roger mendes
New York, US
★★★★★ 5
One of the best shoes
Size: 9.5, Color: Black Polished Full Grain
Outstanding. Fashionable, most comfortable and good construction. No sines of use after quite some time. Highly recommended.
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Reviewed in the United States on March 21, 2026
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Fabric Crazy
Port Orchard, US
★★★★★ 5
Really nice shoes
Size: 9, Color: Black Polished Full Grain
My husband enjoys wearing these shoes. Very classy looking. They fit well. They arrived quickly. He liked them so much he ordered another pair in a different color which have worked out just as well.
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Reviewed in the United States on February 3, 2026
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Verified Purchase
the agitator
Louisville, US
★★★★★ 4
Penny Loafer
Size: 11 Wide, Color: Burgundy Polished Full Grain
I am ending them bak and will order the sae shoe at size 10 1/2. Most shos I fit are 11 however these were too large. They are a beautiful shoe! I will ofder a 10 1/2
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Reviewed in the United States on January 13, 2025
H
Verified Purchase
Hugh62
Waukegan, US
★★★★★ 1
Poor quality control - maybe outlet store leftovers
Size: 11.5, Color: Burgundy Polished Full Grain
The two shoes were not the same size. They were both labeled 11 1/2 but one shoe was larger than the other and the fit was poor. I returned the first pair and ordered a replacement. This time the shoes were close to the same size but too loose and the left one has sewing issues. I've bought Johnston & Murphy for years because of the quality. These were to replace an existing pair of burgundy penny loafers that have finally worn out (even after several heal/sole replacements). That is the expected quality. I suspect Nashville Shoe Warehouse may be handling shoes that didn't measure up for the quality; more like an outlet mall than getting the J&M quality I've come to expect. Update: went to Johnston & Murphy site to buy "direct" from the manufacturer. There were several recent reviews where the shoes were long and didn't fit properly. Genesco - please step up the manufacture / crafting of these classic shoes to the level of quality they used to have.
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Reviewed in the United States on July 21, 2025
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BetterEveryDay
Dallas, US
★★★★★ 5
I usually wear 11.5's, but I buy 1/2 size smaller to accommodate for stretch. Leather relaxes.
Size: 11, Color: Burgundy Polished Full Grain
5 STARS: These shoes are awesome. I keep coming back for more. I have major foot problems, have tried all kinds of shoes, orthotics, and inserts... but believe it or not, these shoes work better than any of that stuff. I wear them daily. I buy lots of them, for home, for church, and I'm getting my first pair of J&M boots today, for winters in Indiana... Brrrr
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Reviewed in the United States on December 18, 2025

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