lernea

Tank size: 30 litres, just an air pump filter with a spray bar, a full spectrum light for the plants and a water heater. pH: EDIT(7.6) misread it earlier as 6.8 (see below) ammonia: 0.25ppm nitrite: 0ppm nitrate: 5ppm kH: about 60ppm (I use test strips for kH, the value is between 40-80ppm) gH...