I came across this article talking about how salvinia molesta can "suck up" lead and mercury, if I understand it correctly.
Was wondering if that happens magnesium and calcium too.
Although I personally have salvinia minima in my tank, perhaps I could anecdotally measure my hardness after a period of time and compare it to tap.
Biological Control of Heavy Metal Pollutants in Water by Salvinia molesta
Heavy metals severely affect the quality of water. Species of Salvinia are regarded as potent hyperaccumulators of heavy metals. Biotechnology will play a promising role in the development of new hyper accumulators by transferring metal hyper accumulating genes from low biomass wild species to...
www.ijcmas.com
Was wondering if that happens magnesium and calcium too.
Although I personally have salvinia minima in my tank, perhaps I could anecdotally measure my hardness after a period of time and compare it to tap.