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Restore pristine reef conditions with the new and improved AZ‑NO3 (Absolute Zero Nitrate)—now powered by its 4th Generation Formula and over two decades of proven success. This latest version utilizes cutting-edge cold-filtering and enzyme stabilization techniques to enhance clarity, boost potency, and ensure nitrate reduction at twice the speed of earlier formulations—even in ionically imbalanced or poorly maintained systems.
Available in:
125 mL (treats 25–30 gal)
250 mL (treats 50–60 gal)
500 mL (treats 100–120 gal)
At its core, AZ‑NO3 functions through aerobic cellular respiration, targeting nitrate molecules using a highly specific oxidoreductase pathway—not chemical binding or bacterial blooms.
The key enzymatic action mimics a "food source" for active enzyme maltase, which in turn activates oxidoreductases to convert nitrate into nitrogen gas.
The result: nitrate is exported naturally through your protein skimmer, not trapped or masked.
Contains no live bacteria, no complex sugars, and no yeast—no risk of unwanted microbial explosions or destabilization of your aquarium’s balance.
Think of it like planting a seed: the AZ‑NO3 formula contains the “food” for the right enzyme reactions to bloom inside your tank. These reactions culminate in complete nitrate breakdown without interfering with your tank’s natural microbial populations.
Cold-filtered for purity, reducing clouding in systems with ionic imbalance
2× faster nitrate reduction than previous formulas
Indefinite shelf life unopened; up to 60 days opened when refrigerated
No residue, no chemical masking, no false readings on any nitrate test kits
Safe for delicate reef systems, SPS corals, clams, and inverts
| Bottle Size | Volume | Treats |
|---|---|---|
| 125 mL | 4 oz | 25–30 gallons |
| 250 mL | 8 oz | 50–60 gallons |
| 500 mL | 16 oz | 100–120 gallons |
Perfect for reef aquarists, saltwater hobbyists, frag tank managers, and anyone battling persistent nitrate levels.
Use ¼ oz (7.5 mL) daily per 50–60 gallons
Increase dose up to 2× if needed (safe for livestock)
Continue daily until nitrates reach 0 ppm
Once nitrates hit zero, reduce dose to ½ of the original
Taper gradually and wean off completely as live rock or plenum takes over denitrification
Transition to weekly or biweekly doses as necessary
Nitrates reduced from 100+ ppm to absolute zero
Protein skimmer output increases dramatically—continues for up to 30 days post-treatment
Sediment, organics, and dissolved waste export improves, leading to more frequent filter pad changes
No impact on ORP or test accuracy, and fully compatible with all other aquarium additives, medications, and supplements
Not bacteria-based, so it remains unaffected by UV, meds, and water chemistry swings
Does not cause bacterial blooms, oxygen drops, or cloudy water
Note: You may need to supplement with iodine if skimmer efficiency becomes too high, as AZ‑NO3 can enhance nutrient export, including iodine.
AZ‑NO3 works reliably in most marine setups, but consider the following to ensure maximum performance:
Turn off ozone generators if O3 saturation exceeds 40%
Limit UV sterilizer output to below 50,000 µw-sec/cm²
Clean pre-filters frequently—clogged pads may reverse nitrate removal by breaking down maltase into nitrates again
Monitor ORP and aerate if necessary; AZ‑NO3 may reduce ORP slightly in tightly sealed systems
Use Polyfilter pads as an alternative to a skimmer to export bonded nitrate compounds
| Feature | AZ‑NO3 | Other Nitrate Products |
|---|---|---|
| Works via Enzyme Respiration | ✅ Yes | ❌ Often bacteria or binders |
| Test Kit Friendly | ✅ Accurate readings | ❌ May give false 0 readings |
| Cold-Filtered, 4th Gen Formula | ✅ Reduced clouding | ❌ May cause haze or bloom |
| Safe for Reef Inhabitants | ✅ 100% reef-safe | ❌ Some unsafe for inverts |
| Compatible with All Additives | ✅ Fully compatible | ❌ Risk of chemical conflict |
| Shelf Stable (Unopened) | ✅ Indefinite | ❌ Limited |
| Yeast & Sugar-Free | ✅ No byproducts | ❌ Often includes organics |
Created by a team of biochemists and hydroculturists, the AZ‑NO3 formula is the result of years of biochemical research into safe, effective nitrate management for reef aquariums. It’s been rigorously tested in diverse marine systems—from nano reefs to commercial frag tanks—with consistent success.
Eliminate nitrates. Elevate your reef.
With AZ‑NO3 Absolute Zero Nitrate, you’re not just removing nitrate—you’re restoring your aquarium to its healthiest, clearest state yet.
