Aptus Substrate Buffer Liquid – pH Buffering Liquid for Coco and Soil Substrates
Aptus Substrate Buffer Liquid – pH Buffering Liquid for Coco and Soil Substrates
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Tipo: Tampón líquido regulador de pH para sustratos
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Función: Satura los puntos de intercambio catiónico del sustrato con calcio y magnesio
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Beneficio: Estabiliza el pH en la zona radicular y previene carencias de Ca/Mg
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Aplicación: Especialmente indicado para fibra de coco; válido para tierra y sustratos inertes
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Description
- ⚖️ Estabiliza el pH: Tampona el sustrato y evita fluctuaciones indeseadas del pH en la zona radicular.
- 🥥 Prepara la fibra de coco: Satura el coco con calcio y magnesio antes de cultivar.
- 🌱 Raíces más sanas: Absorción de nutrientes constante y menor estrés radicular.
- 💧 Todos los sustratos: Compatible con coco, tierra y sustratos inertes.
Substrate Buffer Liquid de Aptus: el tampón líquido que estabiliza el pH del sustrato y deja el calcio y el magnesio plenamente disponibles para las raíces.
Full description
Substrate Buffer Liquid by Aptus — Liquid Buffer to Stabilize Substrate pH
Substrate Buffer Liquid by Aptus Plant Tech is the optimal pH adjuster and stabilizer for all types of substrates, especially coconut coir. It prepares the substrate before cultivation by saturating its cation exchange sites with calcium and magnesium, thereby preventing unwanted pH fluctuations in the root zone and ensuring a stable growing base from the very first watering.
Prepares and buffers coconut coir
Untreated coconut coir tends to capture calcium and magnesium from the nutrient solution, causing deficiencies in the plant and pH imbalances. Substrate Buffer Liquid fills these exchange sites with Ca and Mg, so the coco becomes “buffered” and no longer steals these elements from the feed, leaving them fully available to the roots.
Stabilizes pH in the root zone
By saturating the substrate’s exchange capacity, the product acts as a buffer that softens sharp rises and drops in pH. This results in more consistent nutrient uptake, a healthier root system, and a crop that is more resistant to stress.
Compatible with all substrates
Although its use is especially recommended in coco, Substrate Buffer Liquid can also be used in soil, mixes, and inert substrates to homogenize the starting pH and improve the efficiency of Aptus’s feeding program.
Directions for use
Dilute in the irrigation water according to the dosage table and apply to the substrate before starting cultivation to pre-treat it. See the official feeding chart and recommended doses at aptus-holland.com.
Available in 250 ml, 1 L, and 5 L formats.
Warranty
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How to use
1. Agita bien el envase antes de usar.
2. Diluye Substrate Buffer Liquid en el agua de riego según la tabla de cultivo oficial de Aptus.
3. Aplica sobre el sustrato (especialmente fibra de coco) antes de iniciar el cultivo para pretratarlo.
4. Riega hasta saturar el sustrato y deja drenar el exceso.
5. Comprueba el pH de la solución de partida antes de trasplantar.
6. Consulta las dosis recomendadas en aptus-holland.com.

Aptus Substrate Buffer Liquid – pH Buffering Liquid for Coco and Soil Substrates
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Frequently asked questions
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It is the pH adjuster and stabiliser from Aptus Plant Tech for all types of substrate, especially coco fibre. It prepares the substrate before the grow by saturating its cation exchange sites with calcium and magnesium, guaranteeing a stable base from the very first watering.
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Untreated coco fibre tends to capture calcium and magnesium from the nutrient solution, causing deficiencies and pH imbalances. Substrate Buffer Liquid fills those exchange sites with Ca and Mg, so the coco is buffered and leaves those elements fully available to the roots.
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By saturating the substrate's exchange capacity, it acts as a buffer that smooths out sharp pH swings in the root zone. This means more consistent nutrient uptake, a healthier root system and a grow that is more resistant to stress.
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Yes. Although it is especially recommended in coco, it can also be used in soil, mixes and inert substrates. It serves to even out the starting pH and improve the efficiency of the Aptus feeding programme.
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Dilute it in the nutrient water according to the dosing chart and apply it to the substrate before starting the grow to pre-treat it. Check the official Aptus feeding chart for the recommended doses.
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It is available in 250 ml, 1 L and 5 L sizes. That way you can choose the size that best suits the volume of substrate you need to prepare.