2Hr Aquarist APT 1 Liquid Fertiliser
Compared to conventional fertilisers (largely developed pre-2000s for ‘fish tanks’ with simpler/hardy species):
3X more concentrated for demanding species
2X more potassium for richer colours
Dose 3ml per 100L daily.
| Key Specifications |
|---|
| Form: Liquid inorganic macronutrient fertiliser |
| NPK (Mg) ratio: 0-0-7 (+1.4) |
| Total Potassium oxide (K2O): 7% |
| Magnesium oxide (MgO): 1.4% |
| Microelements: Boron (B), Copper (Cu), Manganese (Mn), Molybdenum (Mo), Zinc (Zn) |
| Package: 300ml with calibrated pump (1ml per press) |
| Estimated duration: ~3 months for a 115L (30 Gal) tank |
FAQ
What is the recommended dosage for a 100L aquarium?
3ml per 100L daily
Does the 300ml pack include a dosing tool?
Yes, it comes with a calibrated pump that dispenses 1ml per press
What nutrients does APT 1 provide?
It provides nitrogen, phosphorus, potassium, magnesium, and trace micronutrients including boron, copper, manganese, molybdenum, and zinc




Carol Sutherland –
I’ve been using APT 1 for my reef tank for three months. The color intensity of corals has improved noticeably. The dosing pump makes it easy to measure daily amounts. I appreciate the high potassium content which supports vibrant hues.
Peter Roberts –
The fertilizer works well in my 115L tank. I use 3ml per 100L daily as recommended. The liquid is clear and easy to mix. I haven’t had any algae issues since switching to this product.
Jennifer Paterson –
After trying several fertilisers, APT 1 stands out for its concentrated formula. My anemones have grown stronger and the polyps are more active. The included pump is very convenient for consistent dosing.