Hi,

I am relatively new to tropical fish keeping and water testing, whilst I understand the basic principal of the Nitrogen cycle. I am not sure I understand the relevance of the values of the test results. pH & ammonia fine, its the nitrate & nitrite that confuse me!
ph 6.4 Ammonia 3 Nitrate/Nitrite 0 Water is clear, fish inc. 8 Mollie Fry of 2 weeks are fine. No losses in 7 days +
Aquarium set up is about 3 weeks, with regular 10% water changes to keep ammonia down. Any tips?

You shouldn't need water changes to keep ammonia or nitrite levels down only the nitrate levels. You should get 100% conversion of ammonia to nitrite to nitrate in your biofilter

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