As you may know, I’m preparing for a massive water change. In between equipment failures, coral deaths and the like.
So I’ve mixed a big batch of water and I overshot my alk by about .8
I really want to get this new water spot on to what my tank is at. With that being said, I have two questions that I need help with.
1. How can I lower alk without changing the salinity?
2. How long will freshly mixed saltwater (with pumps and heaters) last before I start getting algae or something polluting it?
Thanks in advance for any help!