martinmin Posted May 14 Share Posted May 14 Using a TSD meter, my tap water's hardness is about 75ppm. In my tank, the ppm is about 120ppm. 1) Is the 75ppm good for planted aquarium? For the same tank, using acquariumcoop test, GH is around 75ppm, KH is around 40ppm, and pH is around: 6.4 Nitrate: 50ppm Nitrite: 10ppm 2) If I don't add fish into the tank with plants only, do I need to change water to reduce nitrite? Does plant-only tank also need to be cycled by frequent water change? 1 Link to comment Share on other sites More sharing options...
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