Do you use ph buffers with co2 injection?
I'm wondering if anyone uses crushed coral or similar carbonate buffers on their co2 injected tanks? I converted over to planted from a rift lake tank and I left the crushed coral in the filter. I've been meaning to take it out to keep the ph lower as it was hovering around 7.6. I've got my diy co2 going pretty well now and it's dropping my ph to around 7.0. Should I keep the coral in the filter, or would I be better off without it? I have about 1/2 pound mixed in with the substrate as well.