Most aquarium problems are water problems — but tracking parameters and dosing by hand is error-prone. These 8 field-tested tips cut straight to what makes the biggest difference for freshwater and reef aquarists — and at the end you will find a free app that makes following them effortless.
1. Test before you dose — never guess.
2. Stability matters more than perfect numbers.
3. Cycle a new tank fully before adding livestock.
4. Change water regularly to export nitrate.
5. Match top-off and change-water temperature and chemistry.
6. Quarantine new fish to protect the display tank.
7. Log after every change to learn your tank’s rhythm.
8. Do not chase pH with chemicals — fix KH instead.
Put These Tips on Autopilot
Knowing the tips is half the battle — doing them consistently is the other half. Aquarium Chemistry Pro keeps the routine, does the calculations and reminds you what is next, so good habits stick.
Frequently Asked Questions
What parameters should I test?
At least pH, ammonia, nitrite and nitrate; reef tanks also need KH, calcium and magnesium.
Why is my tank cloudy?
Often a bacterial bloom in a new tank or overfeeding — test and reduce feeding.
How often should I change water?
Typically 10–25% weekly, adjusted to your bioload.
What causes algae?
Excess nutrients and light — reduce both and stay consistent.
Does it work offline?
Yes — logging and calculators work without a signal.
Is the app free?
Yes — logging and calculators are free, with an optional ad-free Pro upgrade.