Jan’s blog about aquarium fish and plants

Big water change, big result

OK, the last time when I tested the NO₂ level, I got upset. So today I changed approximately 25 litres of water in the bigger aquarium. The result is significant. The NO₂ level decreased to 1.6 mg/l. I am going to change the same amount of water on Thursday or Friday again. We’ll see the result on Saturday .

God bless water changes, damn those Ramshorns. Maybe I’ll test how a population of 10 Ramshorn snails increases in about a month and also how the amount of their excrements increase without doing any water change. I will need 2 small buckets for this purpose…