Hi, I have a 160L and am preparing to a 900L new tank. I am currently
using ADA's amazonia as substrate (for 3 years now, and its still
going quite well), but since ADA's aqua soil alter water chemistry in
a very large degree, especially when new, I would like to try
something else. Flourite comes into mind, but I like to hear from you
guys that whether Flourite alter water chemistry in ANY WAY? KH, GH?

Thanks