2HR Aquarist · All-in-one liquid
APTe (APT EI)
Fast-growing, high-light CO2 tanks where you do a large water change every week.
1 model
2HR Aquarist · All-in-one liquid
2HR Aquarist APT3
A liquid fertiliser that covers macro, micro and trace nutrients in one bottle, so a single daily dose replaces mixing separate products. It is 2HR's default choice for a planted tank with CO2 and a normal fish load.
Updated
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Best for
CO2-injected planted tanks with an average fish load that want one simple fertiliser.
Worth knowing
If nitrate keeps building up because of a heavy fish load, APT1 (no nitrate or phosphate) is the better fit.
What stands out
- Macro, micro and trace nutrients in one bottle
- One product to dose, no dry salts to mix
- 2HR's balanced ratio aimed at strong growth and good red colour
Specs
- Brand
- 2HR Aquarist
- Supplies
- Macro (N, P, K), micro and trace
- Adds nitrate and phosphate
- Yes
- Effect on KH and pH
- None
- Form
- Liquid
- How often
- Daily or several times a week
- Suits
- CO2 tanks, normal fish load
- Sizes
- Starter, Standard, 200 ml, 500 ml, 600 ml, 1000 ml
Figures from the maker's published specifications. Makers revise products, so check the current figures before buying. Photos supplied by the brand or its distributor.
Compare with
Browse all fertilisers & treatments
2HR Aquarist · Starter and bacteria
APT Balance
New aquasoil tanks during cycling, or after a big rescape or filter clean.
1 model
2HR Aquarist · Foliar spray
APT Dew
The dry-start phase of a carpet, and emersed mosses and plants above the waterline.
1 model
2HR Aquarist · Nutrient aquasoil
APT Feast
New planted tanks and soft-water shrimp setups that want a feeding substrate from day one.
1 model
Frequently asked questions
Quick answers about the 2HR Aquarist APT3, drawn from its specs.
Who is the 2HR Aquarist APT3 best for?
CO2-injected planted tanks with an average fish load that want one simple fertiliser.
Is there anything to watch out for with the 2HR Aquarist APT3?
If nitrate keeps building up because of a heavy fish load, APT1 (no nitrate or phosphate) is the better fit.
What are the alternatives to the 2HR Aquarist APT3?
Other fertilisers & treatments worth comparing: 2HR Aquarist APTe (APT EI), 2HR Aquarist APT Balance, 2HR Aquarist APT Dew. Add any of them to the compare table to see the specs side by side.
How do I compare the 2HR Aquarist APT3 with similar products?
Tap Compare on this page and on any other fertiliser or treatment you are considering, then open the compare table. It lines up every published spec side by side and lets you pick the size of each product.