I want to start by saying that I don't have a test kit.... I ordered it and it is on the way. However.... I bought a used tank from craigslist.... It hadn't been torn down (>week) for long and the gravel was kept wet. I was using red eye tetras to cycle (don't judge). Its been up and running for about 2 weeks. I have major algae. I didn't think you could have algae in an uncycled tank??? Is that true? I was thinking that maybe the tank cycled fast because the gravel and filter were still wet when I got them??? PS... been in this for around 10 years off and on.... I know I need the test kit to be sure. Just wanted thoughts.