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hw-Marinemix Professional Salt Mix 160 Gallons

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A Salt Mix with Near Natural Sea Water Parameters

  • Synthetic Blend for Superior Reef Health
  • Clean and Dissolves Quickly
  • Proven and Trusted Choice for Over 50 Years
  • Formulated with Natural Sea Water Parameters in Mind


With its synthetic process and pure formulation, hw-Marinemix professional guarantees consistency, rapid dissolution, and unmatched cleanliness. Free from unnecessary additives found in other mixes, it meets the rigorous standards set by public aquariums and elite displays.

hw-Marinemix professional is a salt mix for those that are either shooting for natural sea water parameters, or advanced aquarists who want fine-tune the major, minor, and trace elements in their freshly mixed saltwater. By mixing at near natural sea water levels, all water parameters can be easily increased to the desired levels, giving you more flexibility vs most other salt mixes available to the saltwater aquarium hobby.


Estimated Parameters (when mixed to 35ppt*)

pH: 8.1-8.3

Alkalinity: 8.7-9.7 dKH

Calcium: 400-440 ppm

Magnesium: 1240-1320 ppm

Potassium: 385-420 ppm

*Levels are approximate and may differ slightly due to test kit variances.


Mixing Instructions:

By Volume: Add 1/2 cup of Marinemix Salt per 1 gallon of RO/DI water. 

By Weight (Preferred): Add 150 grams of Marinemix Salt per 1 gallon of RO/DI water to achieve 35 ppt salinity.

Let it mix until it is clear and test the salinity of the solution before using. More or less salt may be required, depending on your target salinity level. Always test the salinity level before using in your aquarium.

More Information
UPC 4014246210204
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Product Questions

I received this product the other day. I mixed it up to a salinity of 1.024. There is a white filmy residue all over my mixing container and power head. Is this normal? Is it harmful to fish?
Question by: Kristin Courtney on Apr 19, 2016, 7:33 PM
Great question!
It is very common for a white residue to form on the container and powerhead. This is precipitation and is not harmful and often can be washed off and dissolved into the salt mix. Feel free to let us know if you have any further questions!
Answer by: Connor on Apr 26, 2016, 12:52 PM
how much salt per gallon to reach 1.026?
Question by: Lori Bryant on Mar 26, 2016, 10:52 AM
Great question!
It will vary and you will want your refractometer to find the correct amount however typically it is around 1/2 cup per gallon. Feel free to let us know if you have any further questions!
Answer by: Connor on Mar 28, 2016, 11:40 AM
How many gallons does this make
Question by: adam on Jun 9, 2014, 7:23 AM
It will depend on the salinity you mix it to but it will make 158g if mixed to a specific gravity of 1.024
Answer by: Bulk Reef Supply on Jun 9, 2014, 7:23 AM