Guys do you think that my tank might already be cycled? I'm saying this cause on the first night 2 neon tetras died (probably cause the tank wasn't cycled) and after that I didn't change the water for a week or so cause I didn't know any better. in this time, and a couple weeks after I didn't test the water, or go to the store for them to test it. So I am proposing that mabye in that period of time my tank could have gone through a cycle and when I got the testing kit the tank was on the tail end of the cycle so it looked like in fact the cycle was just starting while it really was ending. I have reason to say this because I saw on the internet that the strips show different colors then what they are soposte to occasionally, and if you look closely at the picture below you can see that the nitrate color is not what it is soposte to look like When it's actually at 0. This would explain the algae growing all over and why the ammonia test is showing 0 ammonia. Another thing during the time period where I couldn't test the water it was really merky especially when I breify took out the ammonia filter for about 3 days this could have been the cycle acting too cause around then I was adding chemicals and only doing weekly water changes which could have greatly sped up the cycle. Thoughts?