Readings for Tanks A, B and C from Today's Prac.

Dr Knight and I also took readings for Tanks A, B and C.  Here is what we got.

Tank A:  pH 6.4, KH 3-6, GH >16, Nitrite 0, Nitrate >250

Tank B:  pH <6.4, KH 0, GH >10, Nitrite 0, Nitrate 250

Tank C:  pH 6.4, KH 3, GH ~9, Nitrite 0, Nitrate 25