Hi there, new to the forums. Glad to meet you all. I have done extensive searching but just need some backup before I go adding my fish to my new tank. I have just set up a second hand fish tank, 200L, I seeded the tank with a piece of driftwood tanken from my exsisting tank, and around 5kg of washed second hand substrate added into my 20kg of new rocks. It currently has 6 plants living in the tank and no fish. I have had the tank running around 2 weeks now. I just aquired a nitrite test kit and returned a reading of 0ppm same as my ammonia test - however i don't own a nitrate testing kit so im unsure on these levels. I haven't done any water changes on the tank since set up, and this is the first time I have done a nitrogen cycle. I am wondering if it's safe to start adding my fish from my existing tank? Cheers, Hamish.