Aquatic Plant Forum banner

What type of rocks will not affect hardness

1127 Views 6 Replies 6 Participants Last post by  Zapins
Hi there,

I was wondering what type/sort of rocks do not affect water hardness. What should I look for?

To test them can I use hydrochloric acid (spirits of salts we call it here) or at least my dad does

Regards darren
1 - 1 of 7 Posts
1 - 1 of 7 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top