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Insoluble in water and nontoxic
Removes dissolved organic compounds that turn the water yellow
An excess of heavy metals in the water is toxic to aquatic life
you will eventually need to replace the blades
A reaction produces heat and forms an instant
Magnesium Pronto™ 500g Rock Insoluble in water and nontoxicMagnesium Pronto is a fast dissolving blend of anhydrous magnesium chloride and anhydrous magnesium sulfate that makes it easy and economical to rapidly raise the magnesium ion concentration in aquariums. Supplemental magnesium is often required for reef aquariums because corals, clams, snails, tube worms, and calcareous algae extract it from the water. Packaged in 250g, 500g, and 1 kg jars. Bulk sizes also available.
