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water level

  1. Tropical fish water levels?

    Freshwater and Tropical Fish
    i was just wondering if anyone would be able to tell me what my; GH, KH, PH and Nitrate should be to have any tropical fish i would like as me and my family are unsure? :-( Would be much appreciated if you are able to tell me! and if you need to know how much my tank holds its 150l... Would be...
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