APT 1 Zero by 2HR Aquarist is a concentrated daily fertilizer made for planted aquariums. The formula supports strong growth and vibrant color without extra nitrates or phosphates, making it ideal for new tanks or heavily stocked aquariums where fish waste already supplies a steady source of nutrients. In a fish-heavy setup, APT 1 Zero provides essential macronutrients for balanced plant nutrition while helping to minimize algae issues.
The specifications below outline the physical properties, chemical analysis, target uptake, and dosing requirements for this liquid plant fertilizer.
| Attribute | Specification |
|---|---|
| Product Type | Nitrate & Phosphate-Free Liquid Plant Fertilizer |
| Product Size | 300 ml |
| Estimated Yield | Lasts ~3 Months in a 30 Gallon Tank (YMMV) |
| Guaranteed Analysis | Soluble Potash (K₂O) 5.5% | Magnesium (Mg) 0.85% | Iron (Fe) 0.1% (0.1% Chelated) |
| Derived From | Potassium Sulfate, Potassium Chloride, Magnesium Sulfate, DTPA Iron, EDTA Iron, EDDHA Iron |
| Form | Liquid |
| Target Uptake | Water Column Uptake |
| Dosage Rate | 3 mL (0.1 fl oz) per 26 US Gallons (100L) Daily |
| Livestock Safety | Shrimp, Snail, and Fish Safe |
| Recommended Light Level | Low to High Intensity |
| Shelf Life | 2 Years from Opening |
1. Is 2HR Aquarist APT 1 Zero safe for freshwater dwarf shrimp and snails?
Yes, the micro-element and chelated iron concentrations are strictly maintained at non-toxic levels that are completely safe for Neocaridina, Caridina, and freshwater snails.
2. How does this nitrate-free formula help prevent algae outbreaks?
By eliminating unnecessary nitrate and phosphate accumulation in the water column while filling potassium and micro deficiencies, plants thrive without feeding algae.
3. How does APT 1 Zero compare to APT 3 Complete in the 2HR Aquarist line?
APT 1 Zero provides zero nitrates and phosphates for new tanks or fish-heavy setups, while APT 3 is ideal for tanks with more plants and fewer fish, supplying an all-in-one formula to unlock the potential of demanding species.
Overall rating: 5.0 / 5 from 5 reviews.
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"Bought this for my iwagumi carpeted scape with rotala red in the background. 2 days in the plants are pearling already everything seems great. Easy dosing instructions and they have a calculator in their site to make it easier if you’re confused. Would recommend."
"I have been using it as per instructions on my 60P tank and plants are growing healthy and beautiful, red plants are showing outstanding color. I will definitely buy it again."
"Was struggling with nitrate balance using APT3 so switched to APT 1 and thing are back on track only high tech nano set up"
"Excellent stuff."
"It’s been about two weeks since start using APT 1 and 3 I can start seeing the difference new plant leaves - you need to research which one it’s good for your tank: APT 1 - APT 3 - APT e - so you used the correct one \ I can see my plants perling right after few minutes"
