Tropic Marin Bio-Magnesium

£59.00 ex VAT

This lot is based on a pre-order basis. Since we take consolidated orders working with the wholesale supplier it may take up to 15 working days (except holidays and weekends) before the item is delivered to your door. The tracking number is provided. If there are any questions you have then please get in touch before you place an order.



Bio-Magnesium Biologically ideal magnesium supplement for reef aquariums.

Tropic Marin Bio-Magnesium supplies magnesium and minerals in a natural, biologically available ionically balanced form to prevent a magnesium deficiency in reef aquariums and to restore the natural concentration ratio between magnesium and calcium.

In a reef aquarium, the concentration of magnesium decreases quickly through biological processes, precipitation and the use by calcareous animals. It is one of the major constituents of saltwater and it is directly involved in algae photosynthesis, i.e. the conversion of carbon dioxide (CO2) and light into organic compounds.

The natural concentration of magnesium in saltwater is 1280-1300 ppm. If the magnesium concentration is below the natural level, it should be replenished with Bio-Magnesium to enable a healthy coral growth.


  • Delivers magnesium for accelerated skeleton growth of corals and calcareous coralline algae.
  • The balanced combination of magnesium and minerals promotes essential biochemical processes in the aquarium.
  • Maintains the natural ionic concentration and the pH value of the reef tank water.
  • No unnatural by-products. No phosphates or nitrates.
  • Suitable for an aquarium stocked with soft and leather corals, LPS, SPS, other filter feeders and/or crustaceans.

Application and Dosage:

When using the enclosed measuring spoon, level the Bio-Magnesium with the spatula for precise measurement. Sprinkle the level spoonfuls of Bio-Magnesium onto the surface of the water, where it is being circulated by your pump. Take care not to allow a larger amount of undissolved Bio-Magnesium crystals to come into contact with invertebrates.

One level measuring spoon (10 ml) increases the magnesium level of 30 US-gal./110 l of tank water by about 10 ppm. The recommended maximum dose is 2 measuring spoons per 30 US-gal./110 l of aquarium system volume per day!

Additional information

Weight N/A