FRESHWATER AQUARIUM PLAN AND WATER LOG
Yenra | https://yenra.com/encyclopedia-of-freshwater-fish/
Updated September 13, 2026

Use before stocking and during routine care. Verify requirements for each named species. Copy test units and reporting basis exactly; this sheet sets no universal stocking rate, water limit, or medication dose.

Tank dimensions (cm or inches), working volume (litres or US gallons), equipment:


Species scientific/common names; adult size and source:


Group size, water requirements, diet and compatibility references:


Source-water preparation and fishless-cycling plan:


Date/time; temperature and unit; pH:


Ammonia result, unit and test type (TAN or other):


Nitrite and nitrate results, units and reporting basis:


Hardness/alkalinity where relevant, units and test method:


Water changes: volume, preparation and date; filter maintenance:


Fish appetite, breathing, activity and interactions:


Recent additions or changes; adviser and agreed next action:


Holiday caregiver instructions and emergency contact:


Source context and current guidance:
https://www.merckvetmanual.com/all-other-pets/fish/providing-a-home-for-fish
https://www.merckvetmanual.com/exotic-and-laboratory-animals/aquarium-fish/management-of-aquarium-fish
https://www.merckvetmanual.com/exotic-and-laboratory-animals/aquatic-systems/environmental-diseases-of-aquatic-animals-in-aquatic-systems
https://www.rspca.org.uk/adviceandwelfare/pets/fish
https://www.rspca.org.uk/adviceandwelfare/pets/fish/diet