Guides
Aquarium guides
Clear, practical guides for the situations every aquarist meets. They follow the same rules the Tank Manager desktop app works with.
How to cycle a new aquarium
The nitrogen cycle explained step by step, and a clear rule for when cycling is finished: at least 28 days, with ammonia and nitrite at zero and measurable nitrate.
Read the guide →Fish-in cycling – what to do when fish are already in the tank
Fish are already in an uncycled aquarium? Feed lightly, measure every day, do smaller and more frequent water changes when ammonia or nitrite are elevated, and do not add new animals.
Read the guide →The first 3 months after cycling
A finished cycle is a start, not a finish. In the first 3 months, measure NH3, NO2, NO3 and pH at least once every 7 days, stock gradually, build a maintenance routine and protect the filter.
Read the guide →Filter maintenance – why you never replace all filter media at once
Filter media carry the bacteria your aquarium depends on. Replace one third every 60 days – all media over 180 days – and replace filter floss as needed, at the latest every 28 days.
Read the guide →