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Nitrogen Cycle

The nitrogen cycle of Ammonia, Nitrite, and Nitrate

New Fish in New System Won’t Live, Dying

New set up … I have recently started a new pond or tank and introduced several fish. I have lost several fish. There are no marks or signs of disease? New Fish in New...

Everything You Need to Know About Nitrites

Nitrites – A Tenth the Level of Ammonia is enough to Kill. i.e. 3.0 ppm ammonia is as deadly as 0.3 ppm nitrite. Nitrites: Second Waste product in the Cycle, Low Numbers KILL! Nitrite...

Ammonia – Hidden Killer of Fish, First Step in the Cycle – Symptoms and Cure

Ammonia: Most Common Killer of New Fish – By Dr. Erik Johnson Ammonia is the primary waste product of fish, excreted primarily through the gill tissue, but to a lesser extent via the kidney....

Ammonia “The Silent Killer” Koi Health and Ammonia Accumulation

Ammonia is the primary chemical waste product of the fish. It’s basically fish urine. It can accumulate in ponds and cause health problems for the fish. Step Four is to assess this ammonia level...

Setting Up A New Community Tank – For Beginners

This article concerns the selection, purchase, and set up of a tank for fish -- geared to the beginner. Part One for Beginners -- The Tank You might be amazed at the lack of...

Indoor Koi Pond – Trouble With Nitrates

Indoor Pond Nitrates Problem – by Doc Johnson It’s hard to have enough artificial lighting to grow healthy algae and plants. Without this, you can suffer an accumulation of nitrate. In studies, high nitrate...

Ammonia As an Aquatic Toxin – Important

Ammonia – The Essentials Ammonia – Understand this! – by Doc Johnson Ammonia is the first waste product of your fish. It is often the cause of your first mortalities in new facilities and...

Bioseeding

Bioseeding or Colonizing an Aquatic System with Beneficial Nitrogen Cycle Bacteria How to “Cycle” a Tank or Pond Overnight.

The Cycle and Why You Gotta Know It

The Cycle is the natural process in which the fish excrete wastes (fish poop and pee) into the pond water and Mother Nature has to deal with these wastes before these compounds pollute the...

Ammonia Toxicity in Aquatic Environments

Where Are Ammonia Levels From? Recall from the “cycle” discussion that Ammonia is the primary waste product of the fish. It’s mostly excreted through the gills by osmosis*, and some is excreted through the...