New tank fish in cycle PH rising

[librarygirl]

Crushed coral I have found to be high range ph buffer- might I suggest dolomite chips or crushed mollusk shells in a nylon stocking in your filter? I learned a lot about raising ph when I acclimated my puffer from fresh water to full salt and am basing my suggestion on my trial and error experience.

Interesting. I think it just depends on how much you use. I keep a small amount of crushed coral in my filter to keep my water buffered as it's pretty soft and my PH stays stable at 7.2 (my outgassed tap water PH). But the shells would work too.