If the bottled water contains no ammonia, it is the tester. Sometimes people never see the yellow of zero even when the tank has been running problem free for years. Assume your reading is zero
Just completed a 40L water change to attempt tackling the 0.25 nitrite reading. I’ve switched filter and bubbler on to circulate fresh water.If the bottled water contains no ammonia, it is the tester. Sometimes people never see the yellow of zero even when the tank has been running problem free for years. Assume your reading is zero