Tropic Marin Bio-Strontium is made for the biologically ideal strontium supplement in reef aquariums. A sufficient supply of strontium is as essential for the growth and well-being of reef building corals as calcium. In the reef aquarium, the strontium concentration can drop rapidly to low values due to biological processes, precipitation and incorporation into the limestone skeleton. Tropic MarinBio-Strontium creates a natural environment in the aquarium and delivers strontium and carbon dioxide in a natural, biologically-available, powdered form and thus supports the healthy development of coral. Tropic Marin Bio-Strontium does not disturb the ionic balance in contrast to the single addition of strontium chloride.Tropic Marin Bio-Strontium+ biologically ideal strontium supplement for reef aquariums+ creates nature identical conditions in aquarium+ supplies essentially strontium and carbon dioxide in natural and biologically-available form+ do not disturb the ionic balance (in contras