I challenge anyone to keep a tank full of large predators at 5ppm nitrates. I'm happy when I see my nitrates at 40ppm. I agree nitrates are bad, but I think the reasonable amount per tank is different depending on size and what fish you have.
I challenge anyone to keep a tank full of large predators at 5ppm nitrates. I'm happy when I see my nitrates at 40ppm. I agree nitrates are bad, but I think the reasonable amount per tank is different depending on size and what fish you have.
I've got one adult Oscar, an L200 and three raphaels in my 125g. My nitrates are ten ppm at the end of a week. It's the lowest I've been able to keep it.