Hard corals need Strontium as well as calcium to form their skeleton. In the ocean, currents provide all the necessary elements. In the closed environment of the aquarium, Strontium demand is constant so its input is necessary. ...
IODINE is a very important trace element. It is rapidly eliminated by invertebrates, protein skimmer, active carbon, algae or is dispersed into the atmosphere. IODI + gives your aquarium the iodine it needs for the development an...