Description
GLA Potassium Sulfate (K₂SO₄) – Dry Aquarium Fertilizer (1lb Bag)
Essential Potassium (K) & Sulfur (S) for Aquatic Plant Growth and Health
Potassium Sulfate (K₂SO₄) is a premium dry fertilizer that delivers vital potassium and sulfur to aquarium plants. This macronutrient blend supports critical functions like photosynthesis, nutrient metabolism, and enzyme activity—especially under low-light or low-nitrate conditions.
K₂SO₄ is commonly used alongside KNO₃ and KH₂PO₄ to balance nutrient ratios and prevent potassium deficiency, which can lead to leaf tip burn, interveinal chlorosis, pinholes, and distorted growth. Sulfur is also essential for root structure and amino acid synthesis. This formula is highly soluble, plant-available, and ideal for demanding planted tanks.
Packaged In: 1lb resealable bag
Guaranteed Analysis:
Soluble Potash (K₂O) – 51%
(42% Potassium)
Sulfur (S) – 18%
Derived From: Potassium Sulfate (CAS 7778-80-5)
Explore complete dosing instructions, dry dosing calculator, and fertilization methods:
greenleafaquariums.com/ferts
Customer Reviews
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Wow this is the good stuff.
GLA fertilizers are the best and their Potassium is unmatched. Super clean and very very fine. I was surprised because it’s normally not so clean and fine I thought it was calcium so I emailed. The potassium they use is micro mixed and ultra fine filtered. No impurities. This stuff is so fine you can easily make foliar spray with it. Love GLA fertilizers.
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This is the second time I’ve ordered this stuff. It’s a good product plant to grow and well.
A friend of mine recommended this product, and with a mixture of other products this company sells my plants are doing very well
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Good stuff.
I love GLA salts, always the best purity.
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Love these ferts!
Great product, easy to use and reliable.
