2HR Aquarist · Remineraliser
APT Sky
Soft-water planted tanks and Caridina shrimp tanks started from RO water.
1 model
2HR Aquarist · Remineraliser
2HR Aquarist APT Sky Plus
Like APT Sky, it remineralises RO or RODI water without adding NPK, but it also raises KH to about 2 dKH and pH to around 7.2 to 7.6. That suits Neocaridina and harder-water plants.
Updated
Best for
RO-water tanks keeping Neocaridina shrimp or plants that prefer a little buffering.
Worth knowing
Not for Caridina or very soft-water setups, since it raises KH and pH.
What stands out
- Restores GH in RO and RODI water
- Raises KH to about 2 and pH to 7.2 to 7.6
- No added nitrogen, phosphorus or potassium
Specs
- Brand
- 2HR Aquarist
- Supplies
- GH minerals plus buffer
- Adds nitrate and phosphate
- No
- Effect on KH and pH
- Raises KH to about 2, pH to 7.2 to 7.6
- Form
- Powder
- How often
- Every water change with RO water
- Suits
- Neocaridina and buffered RO tanks
- Sizes
- Small (150 g), Large (800 g)
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 APT Sky Plus, drawn from its specs.
Who is the 2HR Aquarist APT Sky Plus best for?
RO-water tanks keeping Neocaridina shrimp or plants that prefer a little buffering.
Is there anything to watch out for with the 2HR Aquarist APT Sky Plus?
Not for Caridina or very soft-water setups, since it raises KH and pH.
What are the alternatives to the 2HR Aquarist APT Sky Plus?
Other fertilisers & treatments worth comparing: 2HR Aquarist APT Sky, 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 APT Sky Plus 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.