Surya
Member
I have a 240 litre tank and a full stock of fish, and my nitrates at the end of the week are 20ppm. I do a 50% water change every week. So they basically never fall below 10ppm. Ammonia and nitrites have always been 0 since cycling.
Does this mean that I don't need to add a fertiliser containing nitrates? Or am I missing something here?
I've read a lot of posts encouraging people to use a fertiliser with NPK but is that for people whose plants use up all the nitrates so there are basically zero in the water?
(I currently use either Profito or Flourish and add extra potassium).
Does this mean that I don't need to add a fertiliser containing nitrates? Or am I missing something here?
I've read a lot of posts encouraging people to use a fertiliser with NPK but is that for people whose plants use up all the nitrates so there are basically zero in the water?
(I currently use either Profito or Flourish and add extra potassium).