Description
GLA Estimative Index (EI) Aquarium Fertilizer Package – NPK + Micronutrients (Bags)
High-Dose Nutrient System for Planted Aquariums Using the EI Dosing Method
The GLA Estimative Index (EI) Aquarium Fertilizer Package provides a complete dry nutrient set for advanced aquascapers following the EI fertilization method. This system delivers all essential macronutrients (N, P, K, Mg) and micronutrients (Fe, Mn, Zn, Cu, B, Mo) in analytically pure forms—ideal for aquariums with high light, CO₂ injection, and dense plant growth.
EI dosing involves alternating daily doses of macro and micro nutrients over six days, followed by a 50% water change to reset nutrient levels. No test kits are required for water column nutrients—just maintain stable CO₂ at ~30 ppm using a drop checker.
Includes (Bags):
- Potassium Nitrate (KNO₃) – 1 lb
- Monopotassium Phosphate (KH₂PO₄) – 1 lb
- Potassium Sulfate (K₂SO₄) – 1 lb
- GLA Micros (DTPA & EDTA Chelated With Copper) – 0.5 lb
Guaranteed Analysis:
Potassium Nitrate (13-0-46)
- Total Nitrogen (N): 13.7% (all Nitrate)
- Soluble Potash (K₂O): 46.3%
Monopotassium Phosphate (0-52-34)
- Available Phosphate (P₂O₅): 52%
- Soluble Potash (K₂O): 34%
Potassium Sulfate (0-0-51)
- Soluble Potash (K₂O): 51%
- Sulfur (S): 18%
GLA Micros (With Copper – DTPA & EDTA Chelated)
- Magnesium (Mg): 1.50%
- Iron (Fe) [DTPA]: 7.00%
- Manganese (Mn) [EDTA]: 2.00%
- Zinc (Zn) [EDTA]: 0.35%
- Boron (B): 0.70%
- Copper (Cu) [EDTA]: <0.0175%
- Molybdenum (Mo): 0.0018%
- Chelating Agents: DTPA (Fe), EDTA (Mn, Zn, Cu)
Learn more about Estimative Index (EI) dosing, dry fertilizer preparation, and nutrient targets in our complete guide: greenleafaquariums.com/ferts
Customer Reviews
-
Love GLA fertilizers
Fast shipping and super great service. This is my 3rd EI kit with GLA in the last 6 years, totally happy and always a return customer.
-
My plants thank you!
As a beginner I was very skeptical if I would be able to use dry fertilizers in my aquariums( I have 3). The first thing I noticed was how quickly my plants responded to using GLA fertilizers. After only a few days of dosing I was shooting myself in the foot for not going this route a year ago. I would have saved myself loads of money not buying these all in one fertilizers in premixed bottles. This is so easy to do and will cost you pennies compared to liquid dosing. If your just starting out dont hesitate to go with GLA fertilizers because its super easy. It also cost next to nothing compared to liquid fertilizers, what a waste of money.
-
Best fertilizer kit
Dry salt fertilizers are the best way to go. You dont waste any money on buying a premixed bottle of mostly water . When using dry salts you can create your own mix for pennies. I dont know why anybody would consider using liquid fertilizer compared to this. My plants in all 3 tanks look better than they ever did using the all on in solutions I have been buying. Needless to say I will never buy all in one premixed solution ever again. Stop wasting your money on bottled fertilizer and go dry salts. You will be 100% glad you did, and save loads of money doing it. Thanks Laura for helping me pick the correct kit for my tanks. GLA ferts make them look so good! My only complaint is I cant share pics of how awesome my tanks look.
-
EI Package
This is the 3rd or 4th time I have ordered this package. I really keeps the plants healthy and growing. Always fast shipping and good communication. Good product & company.
-
EI package
Its definitely worth trying. My plants are growing like crazy. Even new plants act like nothing has happened and just start to grow and be happy. Im currently using co2 around 20ppm and everything is well balanced now. I was trying to use seachem products and they were not working very well at all for me.
-
Almost perfect bundle
This is a great little bundle to get started with ei dosing. It includes macros and micros, as well as easy to follow dosing instructions on one of the bags. The only thing that could improve this bundle would be a set of measuring spoons, dosing for smaller tanks is as little as 1/32 of a teaspoon a day, it would be nice if tiny measuring spoons were included for these smaller ammounts. I used larger measuring spoons to make a dilution with water which works, but dry dosing is probably easier. Overall I would still highly recommend though!
-
EI pack
Better packaging in black bags than the older clear bags. Ferts will keep longer.
