Ok I finally tested in three places: I tested in order; hardness,alk, ph, NO2, NO3
1st 2nd 3rd
upper pond waterfall main pond 120 180 120
180 180 180
7.0 7.0 7.0
0 0 0
0 0 0
So apparently everything is good to go. Maybe talk them into more plants like said before? A bubbler aerator? beneficial bacterial to eat muck and suspended particles?
