when I got a new Gh kit and tested my tank it was Gh 0. I slowly raised it to Gh 4. I left the tank alone for a week and retested and it's back to Gh 0. What can cause the Gh to drop like that in a week?
Hey matt, lets mix our water. lol. I got gH creep, you got gH drop. Together, it should be perfect. What substrate are you using and is this a new tank? Akadama can suck water clean for a little while.