OK before I start, I'm new to everything aquaristic and have done a lot of reading the past few months but If anyone can take a look at my test results and give me any advice it would be much appreciated. I have a 130L Medium to heavy planted tank and I was planning on introducing a few Zebra Danios tomorrow but now I'm not to sure. OK here are my test results for the past couple of weeks: 03/02/10 -- pH - 7.5, NH3 - 0, NO2 - 0.1, NO3 - 5 25% Water Change 06/02/10 -- pH - 7.5, NH3 - 0.6, NO2 - 0.8, NO3 - 20 08/02/10 -- pH - 7, NH3 - 0, NO2 - 0.8, NO3 - 50 10/02/10 -- pH - 7, NH3 - 0, NO2 - 1.6, NO3 - 20 11/02/10 -- pH - 7, NH3 - 0, NO2 - 1.6, NO3 - 20 12/02/10 -- pH - 7, NH3 - 0, NO2 - 1.6, NO3 - 20 25% Water Change 13/02/10 -- pH - 7, NH3 - 0, NO2 - 1.6, NO3 - 20 I've been supplementing the filter with Bactozyme and dosing Nutrafin Cycle as instructed on the bottle. I understand that the traditional cycling (dosing amonia) isn't needed for planted tanks and you just need the slow introduction of fish. So... I'm a bit worried about introducing the first fish while NO2 is still at 1.6. Should I wait another week ( I can only get to the LFS at weekends to buy fish) and carry on with the Nutrafin Cycle dosing? Any help would be much appretiated.