Hello! I have been trying to do a fishless nitrogen cycle in my indoor pond (Inside my house but open from the above) I have made biofilter as well. I stared the cycle three weeks ago, Ammonia, Nitrite and Nitrate were 0. In the Second week, Ammonia came to 0.25 and nitrite was 1 ppm Nitrate 5ppm. Now today marks the third week and Ammonia is 0.25 ppm, Nitrite is 2 ppm and Nitrate is 10ppm ( This result has been the same since the last 4 days) I check after every 2 days. Should i be worried that my ammonia and nitrite are just constant?