Tropic Marin Pro-Reef Salt 25Kg Bucket and FREE Phos-Feed

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Product details:

Tropic Marin® PRO-REEF Sea Salt has been designed to meet the special requirements of reef aquariums with optimized concentrations of calcium and magnesium, which promote the growth of corals Want more info?

Availability:    In Stock - Get it by Friday, Mar. 01

The pharmaceutical grade sea salt especially for modern reef aquaria.

Tropic Marin® PRO-REEF Sea Salt has been designed to meet the special requirements of reef aquariums with optimized concentrations of calcium and magnesium, which promote the growth of corals. The lower buffering and the correct pH value serve to stabilize the natural water values, and particularly, the hardness of carbonates, even with the use of calcium reactors. Natural and stable conditions for delicate marine life are achieved only by accurately balancing all influencing factors.

Tropic Marin® PRO-REEF is thus the ideal foundation for the care and growth of fish, corals and other aquatic invertebrates in modern reef aquariums. Use seawater prepared with Tropic Marin® PRO-REEF for regular water changes in your seawater aquarium, to start a new aquarium and to re-equilibrate the pH of a tank.


• Optimizes calcium- and magnesium concentrations as well as alkalinity and pH.
• Designed to meet the special requirements of modern reef aquaria with higher calcium requirements.
• Especially designed for use with calcium reactors or mineral additives.
• To maintain the alkalinity in a 7-8° dKH range.
• Manufactured from pure, pharmaceutical grade salts.
• Contains all major- and minor elements in the exact proportions found in tropical sea water.
• The 70 trace elements are completely soluble due to the use of the mixed-crystal method.
• Compliance with the most stringent quality control measures for the production of pharmaceuticals ensures nature-identical seawater.
• Free from nitrates, phosphates and other unwanted chemicals.

How to use:

To achieve a salinity level of 32-35 ‰ (psu), dissolve 35 ml of Tropic Marin® PRO-REEF per liter or approximately ½ cup of Tropic Marin® PRO-REEF per US gallon water. Dissolve almost all of the salt in a clean container already filled with the full volume of RO/DI water at a temperature of 73-77°F / 23-25°C while circulating/stirring the water. Do not concentrate the mixture by adding the full amount of salt to a smaller amount of water.

Note: Always add the salt to the water, never the water to the salt.  Making a concentrated mixture will cause a calcium carbonate precipitate to form.

When you have added ALMOST all of the salt and the mixture is fully dissolved and clear, start measuring the specific gravity with a hydrometer or similar instrument. Keep adding small amounts of salt until the specific gravity is the value you desire. The specific gravity of the sea salt solution should range from 1.025 to 1.027 (at 73-77°F / 23-25°C) and the pH-value should be in the range of 8.0 – 8.4. If all parameters ??are correct, the salt water is ready to use.

After setting up a new aquarium it takes a few weeks of water being circulated and correct lighting conditions to achieve the biologically stable environment required for the care and breeding of delicate marine organisms.

A weekly, partial water change, replacing 10 % of the total water volume with Tropic Marin® PRO-REEF, will help to maintain the water quality that your livestock needs for good health.


: approx. 7° KH, calcium approx. 440 ppm, magnesium approx. 1350 ppm


: For reef tanks with higher calcium requirements. To maintain the alkalinity in a 7-8° dKH range; particularly suitable when using a calcium reactor.

Use the new dosing calculator for an easy determination of the required amount of salt for your aquarium.

Tropic Marin Phos-Feed

Phosphate is one of the nutrients with high consumption and often low availability in the reef aquarium as well as in the unpolluted natural coral reef. Phosphate is essential in numerous growth processes of the skeleton and tissue of the coral.

In the natural coral reef environment, insoluble, particulate excretions of fish and plankton supply corals with phosphate essential for metabolism and growth. These particles can be very easily filtered out of the water and utilized by the corals. Tropic Marin® has applied this knowledge in a novel product, Tropic Marin® Phos-Feed, for the ongoing phosphate nutrition in reef aquariums.

Tropic Marin® Phos-Feed is modeled after the natural phosphate supply mechanisms seen in the wild coral reef environment. Now, for the first time in your reef aquarium, phosphate is dosed in a targeted manner, without continuously increased phosphate concentration of the water column. As a result, coral growth is stimulated and the corals show natural patterns of skeletal development and bright colors, just like in the intact coral reef under natural conditions. Insoluble particulate phosphates are the most effective way to deliver this essential nutrient to the corals.

Targeted application, best dosage control and optimum effectiveness through the use of insoluble particulate ingredients.  Inspired by the best natural biological principles.


Inspired by the best natural biological principles, utilizes an innovative new transport mechanism for phosphates into the coral.
Tropic Marin® Phos-Feed contains insoluble particulate phosphates to enhance numerous biological processes in the coral for stronger growth and more intense colors.
The included halogen trace elements like iodide, fluoride and bromide, replace elements consumed by increased growth rate of coralline algae and corals.
Recent studies show that insoluble, particulate phosphates are much more effective for coral growth and care than dissolved forms.
Tropic Marin® Phos-Feed and Tropic Marin® Phos-Start are the first products that supply phosphate, in particulate form, to the coral in a targeted and dosed manner.

Phosphate Mineral Powder, Trace Elements (iodide, fluoride and bromide), passive ingredient: Pro-Reef Sea Salt

Application & Dosage

Application: Tropic Marin® Phos-Feed can be added at any time of the day or night. Since the application clouds the water somewhat and to take advantage of the corals' nocturnal polyp opening, Tropic Marin® Phos-Feed should preferably be applied around the time the lights are turned off. The temporary turbidity that forms is normal. The water is particularly clear after the turbidity.Half fill a container with approximately 200ml of reverse osmosis water and add the calculated amount of Tropic Marin® Phos-Feed. Mix powder and water well by stirring. Pour the suspension into the current of the aquarium and rinse the cup with aquarium water.

Dosage: Start with a daily dosage of 1 ml (small measuring spoon) Tropic Marin® Phos-Feed per 200 l (50 US-gal) aquarium water. If after four weeks a phosphate concentration between 0.05 ppm and 0.15 ppm is not reached in the aquarium, double the dosage to 2 ml (larger measuring spoon) per 200 l (50 US-gal). We recommend not to exceed a maximum dosage of 4 ml per 200 l (50 US-gal).

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