Constant Drip - A different way

[Just Toby]

Well, My nitrate is 15-20ppm with my Automatic Water Exchange... If I had more than 40-50ppm my Black Arowana have problem with fins (damage and jagged).

Less nitrate = better for your fish !

Thanks for your post...I personally think that anything over 50ppm is a bad thing but a lot of this forum argue against this. I have seen fish thrive in low values and suffer or die at high values.