These guys got a waterchange today, could not find my water testing strips, but this tank has had about zero nitrites and nitrates (that is NO3, right? I mix the names up today) like 20 or under for ages. Actually never seen it go above (yes, I have done ammonia test as well, it's pretty much none existent). So I change about 10L each week. Except last week when they got a 30L because I needed the water for the fry/shrimp/quarantine/medicine tank (depending what needs I will have haha). Did water test a few days ago on both tanks and everything was normal, but I really would like to do a test today. Need to find those test strips! #waterqualityponderings #freshwateraquarium