
Freshwater Aquarium Maintenance Log
Chemistry, fertilizer dosing, plants and fish, tracked week after week.
Printed and shipped by Amazon. See the current price, delivery and reviews there.
Algae did not appear overnight. The pH did not crash on its own.
Something changed two weeks ago and nobody wrote it down. This log fixes that: a full year of readings, doses and water changes in one place, with the numbers you are aiming for printed on every page so you never have to go looking for them.
Built for planted tanks, community tanks and everything in between.
WHAT IS INSIDE
- 52 weekly test pages with seven rows each: temperature, pH, KH, GH, TDS, ammonia, nitrite, nitrate, phosphate and CO2 drop checker
- Target ranges printed at the foot of every page, so you spot a bad number the moment you write it
- Reference ranges by tank type: community, low tech planted, high tech CO2, Neocaridina, Caridina and discus
- Fertiliser and CO2 dosing log with weekly Estimative Index targets for nitrate, phosphate, potassium and iron
- Water change log: volume, source water, temperature match, conditioner and gravel work
- Plant deficiency chart that turns a yellow leaf into a specific nutrient and a specific fix
- Livestock and plant inventory, with dates added and lost so you stop repeating the same mistake
- Equipment and filter media log with typical service life for floss, carbon, impellers and lighting
- Quarantine and treatment records, kept apart from the display tank
- Aquascape grid pages, running cost tracker and four full tank profiles
Change one variable at a time and give it two weeks. If you raise the light, add CO2 and double the ferts in the same week, an algae bloom tells you nothing about which one caused it. Writing it down is what turns guessing into keeping.
SPECIFICATIONS
Large 8.5 x 11 inch format, 112 pages, undated so you can start today and pause whenever life gets busy. Room for up to four tanks.
A practical gift for anyone who owns a test kit and a water conditioner.
| Pages | 112 |
|---|---|
| Trim size | 8.5 x 0.26 x 11 inches |
| Published | August 10, 2026 |
| Language | English |
| Author | Tomas Curuchaga |
| Publisher | Curuchaga Books, independently published |



