Thanks for the reply. I wish I could keep it at 7dKH and do a ULNS of probiotics or even VSV. Maybe when I upgrade to a larger tank. I do have auto dosers and ESV 2 part already. I just never had to use it on my nano.

What happens if you require a large water change of 30% to 50% in an emergency situation? Your ALK is currently at 7dKH, so would it then crash your tank as the salt mix is at 15dKH? I realize this doesn't happen often, but that would definitely increase your 7dKH to maybe 9dKH?