- Safely increases magnesium concentration in all marine and reef aquaria.
- Utilizes specific magnesium salts to obtain the desired results.
- May be used to attain and maintain a magnesium concentration in excess of 1,500 ppm as desired by aquarist.
- Maintaining an elevated magnesium concentration, relative to the average natural seawater concentration, for a prolonged period of time may be of benefit to reef aquaria in certain situations, and should be attempted by experienced aquarists only.
- 75,000 ppm magnesium
Additionally, evidence suggests that the specific magnesium salts utilized are important to obtaining the desired results. Hydr?t-Mg is a concentrated magnesium solution that makes use of these specific, hydrated (not anhydrous) magnesium salts, in proper ionic ratios. Brightwell Aquatics Magnesion and Magnesion-P are composed of anhydrous magnesium salts, which offer greater purity than hydrated salts; Magnesion is also more concentrated than Hydr?t-Mg. Regardless, the conditions that would dictate that the magnesium concentration in a reef system be maintained within a range of 1,500 - 1,800 ppm are, in most cases, more rapidly addressed with Hydr?t-Mg than with magnesium supplements composed of anhydrous salts. Choosing to maintain an elevated [Mg2+] for an extended period of time assumes that the aquarist understands the impacts and potential risks that doing so can have on a marine aquarium.
Advanced: Determine the magnesium concentration in the aquarium using an accurate test kit before supplementing. Shake container well before each use. Each ml of Hydr?t-Mg will increase the concentration of magnesium ("[Mg2+]") in 1 US-gallon (3.785 L) of water by ~19.5 ppm. If the initial [Mg2+] in the aquarium is below 1,288 ppm, add this product at the maximum rate of 1 ml per 3 US-gallons daily until the desired concentration is attained, then dose daily as needed (see below). Always try to maintain the [Mg2+] within a range of +/-10 ppm. To determine the dosing rate of this product once the desired [Mg2+] has been acquired, measure the daily rate of magnesium uptake (i.e. the decrease in magnesium) in your aquarium by measuring the aquarium's [Mg2+] at the same time each day over a one- to two-week period. To determine the daily dosing rate for magnesium maintenance: estimate the volume of water in the entire aquarium system; divide the daily decrease in [Mg2+] by 19.5; multiply this number by the volume of water in the system to get the daily dosage required (ml) to maintain a stable [Mg2+]. Daily dosing maintains a more stable [Mg2+] than dosing weekly, in which the [Mg2+] spikes just after dosing and then gradually decreases throughout the course of the week. Maintaining a stable, elevated [Mg2+] (e.g. 1,800 ppm) for up to 6 weeks may have positive results in some reef aquaria, however corals and other inhabitants may not respond positively in all cases. Monitor system carefully and be prepared to move these organisms to an alternate system with normal [Mg2+] values if necessary.
Ingredients
Purified water, hydrated chloride and sulfate salts of magnesium, proprietary ingredients