Fritz Complete

  • Full-spectrum water conditioner
  • Dechlorinates chlorine and chloramines
  • Detoxifies ammonia, nitrite and nitrate
  • One-step nitrogen cycle management
  • Does not affect pH
  • Will not over-activate skimmers
  • Economical concentrated formula

About Fritz Complete

Fritz Complete is a concentrated, one-step, full-spectrum water conditioner that detoxifies chlorine, chloramine, heavy metals, ammonia, nitrite and nitrate. Safe to use in fresh and saltwater, including reef and planted aquariums. Use when setting up new aquariums, performing water changes or to quickly alleviate high ammonia, nitrite and nitrate.

Directions & Dosage

Use 1 tsp (5 ml) per 50 U.S. gallons (189 L).
For best results, add Fritz Complete to tap water before adding water to aquarium.
If treating aquarium for ammonia, nitrite or nitrate, base dose on total aquarium volume.
For extremely high levels of chloramine or nitrite, dosage can be repeated or increased up to 5x within a 24-hour period.

DO NOT OVERDOSE. A sulfur odor is normal and dissipates rapidly after use. In certain rare conditions and in low oxygen environments, this product may reduce dissolved oxygen levels. Ensure there is adequate circulation/aeration before adding.

This product will affect the accuracy of Nessler-type ammonia test kits and Winkler-type oxygen test kits. Salicylate ammonia test kits are recommended.


Size Treats Item Number
2 oz 600 gal 47504
4 oz. 1,200 gal. 47505
8 oz. 2,400 gal. 47510
16 oz. 4,800 gal. 47515
1 gal. 38,400 gal. 47520
5 gal. bkt 192,000 gal. 47525
5 gal. cubetainer 192,000 gal. 47530



See below for frequently asked questions regarding Fritz Complete.

  • Does Fritz Complete remove chloramine? If so, where does the ammonia go?

    Fritz Complete works by first removing chlorine from the water, then binding with ammonia until it can be consumed by the nitrifying bacteria in your system.

  • Fritz Complete smells bad. Is that normal?

    Fritz Complete has a very distinct sulfur odor, which is completely normal.

  • If I remove all ammonia, will it harm the bacteria colony?

    Fritz Complete binds with ammonia, nitrite, and nitrate making them harmless to the inhabitants while still bioavailable to the beneficial bacteria.

  • What do I dose if my ammonia is extremely high?

    Dilute the ammonia concentration by performing a water change. Fritz Complete can be added up to 5x the recommended amount safely for high ammonia concentrations.

  • How long should I wait after treating water to add to tank?

    Treated water can be added to the aquarium immediately after mixing with Fritz Complete.

  • Can Fritz Complete be overdosed?

    The dosage of Fritz Complete can be increased by up to 5x the recommended amount. If a higher dose is added to the tank, ensure the aquarium is well aerated and monitor the dissolved oxygen levels.

  • Fritz Complete Best Practices
    • For best results, add Fritz Complete to tap water in a separate container before adding water to aquarium.
    • No equipment restrictions necessary
    • No contraindications: can be used with all of our other products and meds
    • Easy measuring: the 4 oz, 8 oz and 16 oz bottle caps are approximately 5 mL volume
    • Make sure that there is plenty of water flow or aeration when dosing. The active ingredient can reduce the dissolved oxygen quickly when used in large amounts. Avoid overdosing or frequent dosing if possible.
    • Overdosed? Observe livestock for distress, perform small water changes if needed
    • Test with: chlorine test kit, salicylate type ammonia test kit (those with green color charts) and avoid nessler type ammonia test kits (those with yellow/amber color charts)
  • Can I use this with Aquarium Solutions Ich-X?

    Aquarium Solutions Ich-X contraindicates sulfinate- and sulfoxylate-based water conditioners with their product. Which Fritz water conditioners are safe?

    Fritz Guard - SAFE; this is a thiosulfate conditioner and won't affect the medication

    Fritz ACCR - NOT SAFE; this is a sulfinate-based conditioner and can affect the medication

    Fritz Complete - NOT SAFE; this is a sulfoxylate-based conditioner and can affect the medication

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