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Tropic Marin

Tropic Marin Bio-Actif Salt

$40
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SKU X137670
Ships Australia-wide5 in stock
Dry goods ship Australia-wide with fast dispatch from Eastwood — or collect in store with the rest of your order.
SKU 790515C
Paid securely at checkout · ships Australia-wide (or collect in store)
Added — collect in store at Eastwood
  • Ships Australia-wide — fast dispatch from Eastwood
  • Or collect in store with the rest of your order
  • Genuine stock — marine specialists since 2012

Tropic Marin Bio-Actif Salt Mix

Perfect for Ultra-Low Nutrient Systems (ULNS) with Naturally Occurring Marine Biopolymers

Tropic Marin Bio-Actif Salt Mix is expertly crafted for reef tanks utilizing carbon dosing to maintain an Ultra-Low Nutrient System (ULNS). This advanced salt mix incorporates bio-active marine agents that promote vibrant coral growth and enhance overall aquarium health. Whether you're cultivating thriving corals or maintaining a fish-focused setup, Bio-Actif Salt helps protect marine life, encouraging faster coral growth, improved robustness, and heightened vitality for fish.


Why Choose Tropic Marin Bio-Actif Salt?
  • Free from Nitrates & Phosphates: Ensures pristine water quality for reef tanks.
  • Contains Bio-Active Marine Substances: Enhances coral health and vitality.
  • Includes Carbon Dosing Elements: Ideal for creating a ULNS environment.
  • Pharmaceutical-Grade Ingredients: Provides unmatched purity and consistency.
  • Complete Trace Element Profile: Balanced levels of all major and minor elements.
  • Supports Fish Health: Increases protection against mucous membrane damage and promotes elevated mating activity.


Key Parameters
  • Alkalinity: ~8 dKH
  • Calcium: ~440 ppm
  • Magnesium: ~1350 ppm
  • Specific Gravity: 1.025–1.027 (at 23–25°C / 73–77°F)
  • pH Range: 8.0–8.4


Mixing Instructions
  1. Add the salt to RO/DI water while stirring until fully dissolved.
  2. Check specific gravity using a refractometer. Adjust by adding small amounts of salt or water until the desired specific gravity (1.025–1.027) is reached.
  3. Note that conductivity readings may be 10% lower than expected with freshly mixed saltwater—specific gravity is recommended.
  4. Slight cloudiness during the initial mixing phase is normal and indicates the bio-active substances are working.
Tip: Avoid using this salt with auto water change systems, as a biofilm may form in the reservoir after a few days.The Bio-Actif Advantage

This salt mix goes beyond traditional reef salts by incorporating natural marine biopolymers that support coral growth and improve fish health. Enhanced protection of mucous membranes, heightened sensitivity, and improved mating behaviors are just a few benefits for your tank's inhabitants. Healthy corals not only grow faster but also become more resilient in a Bio-Actif environment.


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Create a Healthier, More Vibrant Reef Tank

With Tropic Marin Bio-Actif Salt Mix, you’re giving your reef tank the best foundation for thriving corals and robust marine life. Its revolutionary formula ensures your aquarium reaches its full potential while maintaining stable and balanced water chemistry.