APT Estimative Index (E.I.)
APT Estimative Index (E.I.) - Refill - 200ml is backordered and will ship as soon as it is back in stock.
Usually arrives in 2–5 business days
- Dispatched within 1 business day
- Proudly Kiwi since 2017
- Expert advice
Ships to New Zealand
Ships to New Zealand
- Free shipping on orders over $150. Not included: rural addresses and bulky items such as aquariums.
- Under $150, courier is $6.80 to $9.90 depending on region, or $11.50 to $14.90 for rural addresses. The exact cost shows at checkout.
- Rural and South Island addresses can take a little longer.
- Damaged or faulty on arrival? Tell us within 7 days for a replacement or refund.
Pickup available at Aquascape Shop
Usually ready in 24 hours
APT Estimative Index (E.I.) - Refill - 200ml is backordered and will ship as soon as it is back in stock.
Description
Description
APT Estimative Index by 2Hr Aquarist is the go-to liquid fertiliser for high-energy, plant-heavy aquariums. Based on the Estimative Index (EI) dosing method, it delivers a full spectrum of macronutrients and micronutrients to support explosive plant growth without the guesswork.
Whether you're running a competitive aquascape or farming aquarium plants for resale, this formula provides everything your plants need—no mixing dry salts, no measuring ratios. Just dose and grow.
Why Aquatic Plant Growers Love It:
- Formulated for aggressive growth and propagation
- Great for plant farming and trimming-heavy layouts
- Supports rapid recovery and vibrant leaf development
- Ideal for CO₂-injected, high-light aquariums
- Based on the proven EI approach with a complete nutrient profile
- Encourages dense, algae-free plant mass with regular water changes
Dosage:
Dose daily or as directed. Perform 50% weekly water changes to reset nutrient levels and prevent buildup.
Best For:
- Aquarists farming or propagating plants
- High-tech setups with CO₂ and strong lighting
- Experienced hobbyists using the EI method or looking to scale plant growth
