Chewin’ the Choya » Salt water

If people are using it with no negative results then I would believe it is safe. Because it has “higher” concentrations may not be significant since those concentrations may still be lower than that which occur in nature. Every time a volcanic vent in the ocean floor opens up and spews material into the ocean concentrations of those elements in the nearby ocean may rise temporarily.

With what little is known about LHCs, which is indeed very little, we are still pretty much “flailing around in the dark” concerning their care. For all we know, those higher concentrations in IO may actually be more beneficial to them than other brands. Until such time that LHCs start becoming sick due to use of this product I am going to consider it safe.