Nitrogen Cycle Basics for Pond Owners

Jason Duffney addresses Earth Works building of ecosystem ponds that work with natures’ nitrogen cycle for pond owners wanting to provide a healthy aquatic environment for plants and animals. Organic debris, including fish food, animal, and plant waste, accumulate in ponds and are broken down by nitrifying bacteria making nitrogen available to plants in a process called nitrogen fixation. “Nitrification constitutes a two-step process,” according to the Journal of Microbiology. “In the first step, ammonia is oxidized to nitrite by ammonia-oxidizing bacteria (AOB), followed by the oxidation of nitrite to nitrate by ubiquitous nitrite-oxidizing bacteria.”
High organic nutrient concentrations from runoff pollution are often in the news causing oxygen depleting algal blooms and high levels of harmful bacteria that kill fish and other wildlife. Earth Works offers annual pond cleanouts as part of regular maintenance for the healthy pond ecosystem. We stock both cold and warm water activating beneficial bacteria for dosing your pond filter to fuel the eco-friendly nitrogen cycle for pond owners. While it sounds complicated, the properly constructed and engineered pond with adequate filtration, skimmer, pump turnover rate, and properly stocked fish and plants with annual cleanouts are ecologically balanced and easy to maintain.
“Nitrosomonas bacteria first convert nitrogen gas to nitrite (NO2-) and subsequently Nitrobacter convert nitrite to nitrate (NO3-), a plant nutrient,” according to Lenntech. Nitrates become unhealthy for fish at 120 ppm where plants are insufficient for absorption. While these processes are invisible Earth Works supplies various water test kits and water additives to treat and regulate pond water parameters.
Under dirty conditions, certain bacteria species threaten the health of fish and other pond wildlife populations. “Aeromonas Alley” is described as when water temps are between 42F and 62F when Aeromonas bacterial strains at high concentrations in dirty ponds can result in fish ulcers, hemorrhagic septicemia, brown blood disease (caused by nitrite toxicity), and death. Good and bad bacteria populations are increasing their activities as water temperatures increase, making nitrogen bioavailable over what pond plants can use, which is why we encourage clients to schedule their pond cleanouts in winter heading into spring. Complicating matters, some of these Aeromonas bacteria species convert nitrates back into nitrites in denitrification. Nitrite levels over 0.15 milligrams per liter in fish inhibit their absorption of oxygen.
The nitrogen cycle explains the basics for converting nutrients into plant food. Earth Works and a network of Certified Aquascape Contractors provide information, products, and services to apply natural systems to beautiful, low-maintenance ecosystem ponds.

[@Phurbuart1959]

👏👍👍👍👍👍

[@WaynesWorldStudioVancouver]

Thank you for sharing the information but the BG noise just over power your voice and making it hard to listen.

[@stevealdridge8918]

I have a 12ft swimming pool for koi rescue and have had a huge nitrite spike how can I deal with that? Thanks

[@EarthWorksJax]

Sorry to hear! Do water change for dilution, add detox of course, an ammonia binder, and salt at 1-1.5lbs per 1000 gallons. Plus, LOTS of aeration. If you've got a quarantine tank you might move the rescued koi to that if water there is stable until you can correct unhealthy water parameters in the pool.