Marca:The 2Hr Aquarist

2Hr Aquarist APT 1

Q: Which APT is right for me? APT 1 vs APT 3 vs APTe

If you're new to the hobby, have a sparse tank, have more fish or if you are especially wary of algae, start with APT1: it contains no added nitrate or phosphate, so there's less for algae to feed on while you get established. As the tank matures and plant mass grows, take a nitrate reading: Nitrate keeps climbing week to week → your fish are outpacing your plants. Stay on APT 1. Nitrate reads low or zero → your plants are consuming everything. Move up to APT 3 (or APTe for very heavily planted tanks).

Q: Is APT Safe for Shrimp?

APT 1 is safe for shrimp and all aquarium livestock. We keep thriving Caridina and Neocaridina shrimp in every one of our display tanks; some of our Neocaridina colonies are more than 5 years old. APT 1 does not harm shrimp even if it is significantly overdosed. If you are seeing shrimp losses, the cause is almost always a shift in water parameters - KH/TDS, temperature, or a large or rapid water change - or an acclimation issue, rather than fertiliser. If it keeps happening, send us your parameters and we'll help you work through it.

Q: Can I combine with APT 3 or APT e?

Yes, you can do 'half APT1, half APT3' for instance, or dose APT1 on Monday, APT 3 on Tuesday, then APT1 on Wednesday etc. Whatever your chosen pattern, consistency is key and simplicity helps :)

$23.90

Artful Intelligence.

En comparación con los abonos convencionales:
3X más concentrado para especies exigentes*
2X más potasio para colores más intensos^

Dosis 3ml por 100L diarios.

#200ml

200ml duran ~3mths para un tanque de 18 Gal / 70L. Dispensador no incluido.

#500ml

500ml dura ~3mths para un tanque de 50 Gal / 190L. Dispensador no incluido.

#1000ml

1000ml dura ~3mths para un tanque de 100 Gal / 380L. Dispensador no incluido.

#standard

Nuestro envase estándar de 300 ml viene con un dosificador calibrado.
Dura ~3mths para un tanque de 30 Gal / 115L.

#starter

Nuestro paquete de inicio de 100 ml viene con una pipeta calibrada.
Dura ~ 3 meses para un tanque de 8 Gal / 30L.

Why

*en abono elemental soluble total por ml.
^en términos de cantidad de potasio por ml.

APT 1 reproduce la fórmula ganadora de APT 3, pero sin nitratos ni fosfatos. Esto proporciona un control máximo de las algas para los acuarios nuevos (recomendamos utilizar APT 1 durante los primeros 1 o 3 meses) y un rendimiento óptimo a largo plazo para los acuarios con más peces. Esto se debe a que los peces ya aportan fosfatos y nitratos a través de su comida y sus desechos.
FAQ Here.

Ingredientes

APT 1 / Zero
Abono inorgánico líquido con macronutrientes
Abono NPK (Mg) con micronutrientes y trazas de boro (B), cobre (Cu), manganeso (Mn), molibdeno (Mo) y zinc (Zn).
0-0-7 (+1.4)

7% Total Óxido de potasio (K2O)
1.4% Óxido de magnesio (MgO)
0.09% Hierro total quelado por EDTA, DTPA y EDDHA.
Todos los nutrientes son completamente solubles en agua.

Ingredientes: Sulfato de potasio (CMC1 CAS n°7778-80-5) Cloruro de potasio (CMC1 CAS n°7447-40-7)Sulfato de magnesio (CMC1 CAS n°7487-88-9)

INSTRUCTIONS

3ml / 100L per day
0.1 fl oz / 26 USgal per day

Dose any time of day, consistently.
Check Dosage Calculator for tanks without CO2 or mostly slow-growers / shade plants.
Minor sedimentation / crystallization is normal.

WHY

APT 1 (previously called APT Zero) replicates APT 3's winning formula without nitrates and phosphates. This gives maximum algae control for new tanks (we recommend all tanks to start with APT 1 for the first 1-3 months), and optimal long term performance for tanks with more fish. This is because fish food and waste already supply phosphates and nitrates.

INGREDIENTS

GUARANTEED ANALYSIS
Soluble Potash (K2O)....................................... 5.5%
Magnesium (Mg)............................................. 0.85%
Iron (Fe) ...........................................................0.1%
0.1% Chelated Iron

Derived from: Potassium Sulphate, Potassium Chloride, Magnesium Sulphate, DTPA Iron, EDTAIron, EDDHA Iron. Further information here.

Variantes de producto

2Hr Aquarist APT 1

Standard

$23.90

6X Power

Example of APT's relative concentration compared with a 50-year old European 'big brand fertiliser'. APT contains 5X the amount of Phosphorus (P) and 6X Potassium (K) per ml. That is like having 5 shots instead of 1 in your morning espresso, if you are into coffee :)

Optimal Balance

Simply 'more' is not always better. Lower Nitrogen (N) delays chlorophyll production and promotes richer colors- up to a point. Nitrogen is also essential for metabolism. APT pushes the limits of that balance. Maximum color before diminishing returns.

Superior Form

Similar to food labels, "20% protein" or "1% Iron" tells little about actual absorbability, efficacy, and impact. APT's components are up to 50X more absorbable and accessible across a wider range of pH and other water parameters.

Dosage

Use the Dosage Calculator. Absolute precision isn't necessary: when in doubt, dose slightly less, not more. Consistency is much more important than being 100% accurate.

Timing

Changing fertilizers can trigger a temporary system shock. In rare cases, this results in widespread algae. This can be mitigated by introducing APT incrementally over 2 weeks.

Switching?

Changing fertilizers can trigger a temporary system shock. In rare cases, this results in widespread algae. This can be mitigated by introducing APT incrementally over 2 weeks.

Which APT?

APT 1 is perfect for tanks with more fish, fewer plants. Also for new tanks (<3 months) with aquasoil. Enjoy comprehensive nutrition without nitrates and phosphates for maximum algae control.

APT 3 is perfect for tanks with more plants, fewer fish. Enjoy 100% comprehensive macro, micro and trace minerals. Unlocks the full potential of the hobby's most demanding plants.

APT e is perfect for heavily planted Dutch Style tanks and users who understand EI methodology. Supremely concentrated and expertly balanced.

Deeper Reds Built-In

APT 3's nitrate-limiting ratio is specifically engineered to bring out deeper reds in species like Rotala rotundifolia and Ludwigia arcuata, while still providing everything plants need to thrive.

Modern Plant Science

APT's proprietary Capstone formulation was developed specifically for today's planted aquariums, factoring in current tank environments, new plant hybrids, and evolving light and CO2 technologies, unlike conventional fertilisers that trace their origins to 1970s fish-focused tanks.

FAQs

Please read our FAQs page to find out more.

Which APT is right for me? APT 1 vs APT 3 vs APTe

If you're new to the hobby, have a sparse tank, have more fish or if you are especially wary of algae, start with APT1: it contains no added nitrate or phosphate, so there's less for algae to feed on while you get established. As the tank matures and plant mass grows, take a nitrate reading:

Nitrate keeps climbing week to week → your fish are outpacing your plants. Stay on APT 1.
Nitrate reads low or zero → your plants are consuming everything. Move up to APT 3 (or APTe for very heavily planted tanks).

Is APT Safe for Shrimp?

APT 1 is safe for shrimp and all aquarium livestock.

We keep thriving Caridina and Neocaridina shrimp in every one of our display tanks; some of our Neocaridina colonies are more than 5 years old. APT 1 does not harm shrimp even if it is significantly overdosed.

If you are seeing shrimp losses, the cause is almost always a shift in water parameters - KH/TDS, temperature, or a large or rapid water change - or an acclimation issue, rather than fertiliser. If it keeps happening, send us your parameters and we'll help you work through it.

Can I combine with APT 3 or APT e?

Yes, you can do 'half APT1, half APT3' for instance, or dose APT1 on Monday, APT 3 on Tuesday, then APT1 on Wednesday etc. Whatever your chosen pattern, consistency is key and simplicity helps :)

The 2Hr Way

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