My RO water is at 7 pH 1KH and 1GH. I add 1.5 grams shrimp mineral to get the KH up a little and KH now at 3 and GH at 9, but pH at 7.7. Add CO2 and pH drops to 5.5. Is this a safe change, day and night for neon tetras?
Thanks for the link, I’ll turn down the CO2. It’s only a planted tank but I’m assuming you’re saying that the CO2 can be managed such that the pH shift is small enough to not have to mess with altering ph? That 7.7 seems kinda ‘high’ compared to what I’ve seen most tropical fish like. Thanks!