robocop
Aquarium Advice Activist
I’ve set up a 75g freshwater tank about 3-4 weeks ago and the water has turned cloudy and greenish. Why is this and what can I do? I used all RO water to set it up and there were not traces of Ammonia or Nitrite after a week in a half so I added some gold fish. I have two hang on the back bio wheel filters and that’s it. Could it be a water movement problem i.e. need power heads? Or is this a natural cycle?
