In a marine aquarium reverse osmosis water is used for topping up evaporated water. The only snag with RO water is that it removes everything from the water including valuable minerals.
With Tropic Marin Re-Mineral Marine the water of reverse osmosis gets back all its beneficial natural minerals and substances and at the same time the alkalinity is raised and stabilized.
Many remineralisers only add certain minerals back into the water (such as calcium) where as Tropic Marin Re-Mineral Marine adds everything that nature would expect in the sea in terms of trace elements.
See the range here.