Kent Marine Essential Elements replaces biologically important trace minerals which are removed by marine fish, invertebrates, through protein skimming, ozone, and especially carbon filtration. Essential Elements trace mineral supplement is designed for reef and fish-only Marine Aquariums. It is unmatched in its ability to increase vigor and color It does not contain detrimental heavy metals, phosphates, nitrates, or silicates. Essential Elements also does not promote undesirable algae growth. Size: 8 oz.
Directions: Add 5 ml (1 tsp) per 50 gallons of aquarium water every 1 to 2 weeks, depending on the amount of water changes performed. With frequent water changes, then add KENT Marine Essential Elements every 2 weeks. If not, then add weekly. Also add immediately after carbon use.