I have had a 10g (practice tank) running for the last 7 months.
How is it that all my levels for PH, Phosphate, Nitrate, Nitrite, Ammonia are at 0, SG within decent levels at 1.023, temp at 78.2.....
WITHOUT ANY WATER CHANGES.
EVER.
I have 3 fish in the tank now, all getting along (and I...