APT 3 (Complete) Calculator
The ultimate all-in-one fertilizer for high-tech planted aquariums.
Quick APT 3 Calculator
Why use APT 3 (Complete)?
APT 3 (Complete) is a 100% comprehensive fertilizer designed for high-tech aquariums with CO2 injection and high lighting. It contains a precise balance of Nitrogen, Phosphorus, Potassium, Iron, and Trace elements to ensure optimal plant growth and vibrant colors.
The 2Hr Way
Developed by The 2Hr Aquarist, APT 3 follows a specific philosophy of nutrient management that prioritizes stability and plant health. It is highly concentrated, meaning a small dose goes a long way in maintaining a lush, algae-free aquarium.
Safety Tips
- Standard dose is 5mL per 100L, 4 times a week.
- Ideal for tanks with many plants and fewer fish.
- Safe for shrimp and other invertebrates when used as directed.
Frequently Asked Questions
Use APT 1 (Zero) if you have a high fish load (which provides nitrates and phosphates). Use APT 3 (Complete) if you have a high plant load and relatively few fish.
Yes, a weekly 30-50% water change is highly recommended to prevent nutrient buildup and maintain water clarity.
Written by Richard James
Aquarist, author, and creator of ShrimpKeeper.co.uk. Helping hobbyists achieve professional results through precision dosing.
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