Wow, in reading and reading (multiply by 100), I get so many different stories. I've really come to the conclusion better to work with my water. Don't get me wrong, if I had space for an RO, I'd get it.
In my low tech tank I need to see how to use my water. As a note; I had eco complete in my tank for 14 months. Cons: too sharp for me. My plants melted, even Crypts (no, never came back). Not one stem ever grew roots. I did have a wisteria which lasted six months. I assumed it was my water hardness. Now I'm wondering if it's the fact that I never added nutrients until the year mark. I was told not to.
Learning experience: Just because a company tells you something, doesn't mean it's true.