Soooo, i've been really wracking my brain here about the best product to use to remineralize my ro water. Ideally I wanted to raise both kg and gh. I have a 250ish L aquarium so want a relatively cheap solution. My water is high in nitrates (35-40ishppm) so cutting it with ro isn't really an option and salty shrimp is out of the question due to price. I came across Aqua Source GH and KH buffer and wondered if it would be a good choice even though it is aimed at ponds... Can't seem to find a list of ingredients though?