How long does it take for it to do anything? I am hanging it in a bag by the filter to figure out how much to use before I put it in the filter.
Fish store guy cautioned me to not go too crazy as it could cause a big upswing, but I've never read that... he showed me how much it changed a test tube but that was just a test tube, not a 65 gallon tank. I have maybe 3/4 cup in there now, it's been in there a day. It's 6.6 now - I'd like it closer to / right around 7. Should I wait a bit longer or just add more now?
Thanks.