Hydroponic pH Calculator
Ideal pH Range by Plant
Find the optimal pH range for your hydroponic crop
Nutrient Solution Mixer
Calculate nutrient concentrate amounts for your reservoir
Formula
pH Adjustment (mL) ≈ (Current pH - Target pH) × 0.5 mL/gal × Reservoir Gallons
Frequently Asked Questions
What pH should hydroponic water be?
Most hydroponic plants grow best in a pH range of 5.5-6.5. This slightly acidic range allows optimal nutrient absorption. Different crops have slightly different ideal pH ranges.
Why does pH matter in hydroponics?
Nutrients become unavailable to plants outside the correct pH range, even if present in the solution. Iron locks out above pH 6.5, while calcium and magnesium lock out below pH 5.0.
You may also need
~
Watering Schedule Calculator
Free watering schedule calculator. Determine how much and how often to water your garden, lawn, or potted plants based on conditions.
Everyday~
Indoor Plant Light Calculator
Free indoor plant light calculator. Determine grow light wattage, placement, and duration needed for healthy indoor plants.
EverydayA
pH Calculator
Free pH calculator. Calculate pH from hydrogen ion concentration, convert between pH and pOH, and determine acidity or alkalinity.
Science