In the last three days have had a slight Nitrite increase. Trying to figure the cause. Up till three days ago Ammonia - 0, Nitrite - 0, Nitrate - 5.0, pH 7.80.
Five days ago I added 2 Dwarf Gourami, 4 Cory Cats and a plant pack. Three days ago the readings were Ammonia - 0, Nitrite - .50...