EI Dosing Pack
Price range: $17.00 through $55.00
Achieve a thriving and healthy aquarium with the EI Dosing Pack. This comprehensive solution provides all the essential nutrients your aquatic plants need to grow strong and beautiful.
Overview
The EI Dosing Pack is a set of dry fertilisers for dosing a planted aquarium with the Estimative Index (EI) method. It contains potassium nitrate, mono potassium phosphate, potassium sulphate, magnesium sulphate, calcium sulphate and Rexolin APN, each in its own sealed bag. You work out your doses with a calculator and mix your own, rather than buying a ready-made liquid.
Specifications
| Type | Dry fertiliser pack |
| Contains | Potassium nitrate, mono potassium phosphate, potassium sulphate, magnesium sulphate, calcium sulphate and Rexolin APN |
| Sizes | Small, Medium, Large |
| Packaging | Each fertiliser in its own sealed bag |
What is in each pack
| Fertiliser | Supplies | Small | Medium | Large |
| Potassium nitrate (KNO3) | N | 50 g | 100 g | 200 g |
| Mono potassium phosphate (KH2PO4) | P | 50 g | 100 g | 200 g |
| Potassium sulphate (K2SO4) | K | 50 g | 100 g | 200 g |
| Magnesium sulphate (MgSO4·7H2O) | Mg | 100 g | 200 g | 400 g |
| Calcium sulphate (CaSO4) | Ca | 100 g | 200 g | 400 g |
| Rexolin APN (chelated micronutrients) | B, Cu, Fe, Mn, Mo, Zn | 50 g | 100 g | 200 g |
Weekly dosing targets (ppm, the same as mg/L)
| Nutrient | EI | ADA | Lean dosing |
| Potassium (K) | 20 to 30 | 20 to 24 | 10 to 18 |
| Nitrate (NO₃) | 15 to 20 | 1.5 to 6 | 5 to 12 |
| Phosphate (POâ‚„) | 2 to 6 | 1.4 to 4 | 2 to 8 |
| Magnesium (Mg) | 5 to 10 | not specified | 2 to 6 |
| Iron (Fe) | 0.5 to 1 | 0.03 to 0.06 | 0.05 to 0.6 |
Choosing a dosing approach
EI (Estimative Index) uses high doses so that plants have everything they need, on the idea that healthy, well-fed plants out-compete algae.
The ADA approach is leaner and designed to be used with ADA Aqua Soil, so its dosing numbers and frequency are different.
A leaner approach can suit tanks that focus on hardscape and have less plant mass, and a richer approach can suit tanks with heavy plant loads. Overdosing a sparsely planted tank can cause instability and algae, and underdosing a heavily planted one can starve the plants and also lead to algae.
Worked example
For a 3 ft tank (90 × 45 × 45 cm, 180 litres) with some substrate and hardscape, the water volume might be about 140 L. We want to make a DIY fertiliser in the Rotala Butterfly calculator.
| Fertiliser | Amount | Result |
| KNO3 (N) | 1.71 g | 7.5 ppm (N) + 4.75 ppm (K) |
| KH2PO4 (P) | 400 mg | 2 ppm (P) + 0.82 ppm (K) |
| K2SO4 (K) | 2.34 g | 7.5 ppm (K) |
| MgSO4·7H2O | 2.84 g | 2 ppm (Mg) |
| CaSO4 | 3.85 g | 6.4 ppm (Ca) |
| Rexolin APN (Fe and micros) | 117 mg | 0.05 ppm (Fe) |
Total potassium (K) from all three potassium sources: about 13 ppm.
Do a 50% water change weekly, then add the fertilisers.
How to use it
- Choose your dosing approach and target levels from the table above.
- Work out the grams for your tank’s water volume with the Rotala Butterfly nutrient calculator.
- After your weekly water change, add the fertilisers.
Dosing guide
New to dosing dry fertilisers? Our step-by-step guide, How to Dose Dry Fertilisers in a Planted Aquarium (EI Method), explains how to use a calculator, set up your dosing containers and mix your solutions.
Questions
What is EI dosing?
A method that uses higher doses so plants are not short of nutrients. See the dosing approach above.
How much do I add?
Work it out with the nutrient calculator for your tank. See the worked example above.
Can you help me with EI dosing?
Yes. Message us and we will be happy to help.
The shipping prices are determined by Australia Post, and we do not make any profit from postage fees. Any variation in price is solely due to packaging. Our aim is to offer you the most competitive rates for shipping your orders. At Green Aquarium, we strive to provide you with the best shipping options for your aquatic plants, fertilisers, shrimp, and fish. Please review the following information regarding our shipping and delivery services:
Shipping Options:
- Express Post: Recommended for purchasing plants, shrimp, and fish. Plants will be carefully packed in a small express post box, secured in a plastic bag with a small amount of water, and wrapped in bubble wrap for added protection.
- Styrofoam Box Express: Specifically for shipping live shrimp and fish. We use a sturdy Styrofoam box and send it via express post to ensure the safety and well-being of your aquatic pets during transit.
- Registered Post for Fertilisers: Suitable for shipping fertilisers. Your order will be sent via registered post, providing a secure and reliable delivery option.
- Express Post for Fertilisers: If you prefer faster delivery for your fertilisers, we offer express post services.
Please Note: The prices for shipping are set by Australia Post, and we do not make any profit from postage fees. Any difference in price would be due to packaging. We strive to provide you with the best available rates for shipping your orders.
Shipping within Australia: We currently offer shipping services within Australia only. We apologise for any inconvenience caused and appreciate your understanding.
Local Delivery: If you're in the vicinity or would like to avoid shipping fees, we invite you to select the local delivery option at checkout. Before placing your order, please contact us via email, SMS, or phone call to confirm if this option is available for your area. Additionally, reach out to us to schedule a specific time and date for the delivery. Opting for local delivery is an excellent way to reduce shipping expenses.
Pick-Up Option: If you're located nearby or prefer to save on shipping costs, we welcome you to choose the pick-up option during the checkout process. Our address for pick-up will be provided upon completion of your order. Opting for pick-up is a great way to save on shipping expenses.
Shipping Address Requirements: Please note that we do not ship to PO Boxes. Kindly provide a valid residential or commercial address during the checkout process to ensure successful delivery.
If you have any questions or require further assistance regarding our shipping and delivery services, please don't hesitate to contact our customer support team. We are here to help you with any queries you may have.
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